diff --git a/src/main/java/it/cavallium/dbengine/database/memory/BinaryLexicographicList.java b/src/main/java/it/cavallium/dbengine/database/memory/BinaryLexicographicList.java
new file mode 100644
index 0000000..18f5b78
--- /dev/null
+++ b/src/main/java/it/cavallium/dbengine/database/memory/BinaryLexicographicList.java
@@ -0,0 +1,269 @@
+package it.cavallium.dbengine.database.memory;
+
+import it.unimi.dsi.fastutil.bytes.ByteArrayList;
+import it.unimi.dsi.fastutil.bytes.ByteCollection;
+import it.unimi.dsi.fastutil.bytes.ByteList;
+import it.unimi.dsi.fastutil.bytes.ByteListIterator;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.StringJoiner;
+import org.jetbrains.annotations.NotNull;
+
+public class BinaryLexicographicList implements ByteList {
+
+	private final byte[] bytes;
+
+	public BinaryLexicographicList(byte[] bytes) {
+		this.bytes = bytes;
+	}
+
+	@Override
+	public int size() {
+		return bytes.length;
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return bytes.length == 0;
+	}
+
+	@Override
+	public ByteListIterator iterator() {
+		return ByteList.of(bytes).iterator();
+	}
+
+	@NotNull
+	@Override
+	public Object @NotNull [] toArray() {
+		var output = new Object[bytes.length];
+		for (int i = 0; i < bytes.length; i++) {
+			output[i] = bytes[i];
+		}
+		return output;
+	}
+
+	@SuppressWarnings("unchecked")
+	@NotNull
+	@Override
+	public <T> T @NotNull [] toArray(T @NotNull[] a) {
+		Object[] content = toArray();
+		if (a.length < bytes.length)
+			// Make a new array of a's runtime type, but my contents:
+			return (T[]) Arrays.copyOf(content, bytes.length, a.getClass());
+		System.arraycopy(content, 0, a, 0, bytes.length);
+		if (a.length > bytes.length)
+			a[bytes.length] = null;
+		return a;
+	}
+
+	@Override
+	public boolean containsAll(@NotNull Collection<?> c) {
+		return ByteArrayList.wrap(bytes).containsAll(c);
+	}
+
+	@Override
+	public boolean addAll(@NotNull Collection<? extends Byte> c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean addAll(int index, @NotNull Collection<? extends Byte> c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean removeAll(@NotNull Collection<?> c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean retainAll(@NotNull Collection<?> c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void clear() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public ByteListIterator listIterator() {
+		return ByteList.of(bytes).listIterator();
+	}
+
+	@Override
+	public ByteListIterator listIterator(int index) {
+		return ByteList.of(bytes).listIterator(index);
+	}
+
+	@Override
+	public ByteList subList(int from, int to) {
+		return ByteList.of(bytes).subList(from, to);
+	}
+
+	@Override
+	public void size(int size) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void getElements(int from, byte[] a, int offset, int length) {
+		ByteList.of(bytes).getElements(from, a, offset, length);
+	}
+
+	@Override
+	public void removeElements(int from, int to) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void addElements(int index, byte[] a) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void addElements(int index, byte[] a, int offset, int length) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean add(byte key) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean contains(byte key) {
+		for (byte aByte : bytes) {
+			if (aByte == key) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	@Override
+	public boolean rem(byte key) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public byte[] toByteArray() {
+		return ByteList.of(bytes).toByteArray();
+	}
+
+	@Override
+	public byte[] toArray(byte[] a) {
+		return ByteList.of(bytes).toArray(a);
+	}
+
+	@Override
+	public boolean addAll(ByteCollection c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean containsAll(ByteCollection c) {
+		return ByteList.of(bytes).containsAll(c);
+	}
+
+	@Override
+	public boolean removeAll(ByteCollection c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean retainAll(ByteCollection c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void add(int index, byte key) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean addAll(int index, ByteCollection c) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public byte set(int index, byte k) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public byte getByte(int index) {
+		return bytes[index];
+	}
+
+	@Override
+	public int indexOf(byte k) {
+		for (int i = 0; i < bytes.length; i++) {
+			if (bytes[i] == k) {
+				return i;
+			}
+		}
+		return -1;
+	}
+
+	@Override
+	public int lastIndexOf(byte k) {
+		for (int i = bytes.length - 1; i >= 0; i--) {
+			if (bytes[i] == k) {
+				return i;
+			}
+		}
+		return -1;
+	}
+
+	@Override
+	public byte removeByte(int index) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public int compareTo(@NotNull List<? extends Byte> o) {
+		var length1 = bytes.length;
+		var length2 = o.size();
+		if (length1 == length2) {
+			int i = 0;
+			for (byte ob : o) {
+				if (bytes[i] != ob) {
+					var compareResult = Byte.compareUnsigned(bytes[i], ob);
+					if (compareResult != 0) {
+						return compareResult;
+					}
+				}
+				i++;
+			}
+			return 0;
+		} else if (length1 > length2) {
+			return 1;
+		} else {
+			return -1;
+		}
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) {
+			return true;
+		}
+		if (o == null || getClass() != o.getClass()) {
+			return false;
+		}
+		BinaryLexicographicList bytes1 = (BinaryLexicographicList) o;
+		return Arrays.equals(bytes, bytes1.bytes);
+	}
+
+	@Override
+	public int hashCode() {
+		return Arrays.hashCode(bytes);
+	}
+
+	@Override
+	public String toString() {
+		return Arrays.toString(bytes);
+	}
+}
diff --git a/src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java b/src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java
index c46045e..9a0095c 100644
--- a/src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java
+++ b/src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java
@@ -85,7 +85,7 @@ public class LLMemoryDictionary implements LLDictionary {
 	}
 
 	private ByteList k(ByteBuf buf) {
-		return ByteList.of(LLUtils.toArray(buf));
+		return new BinaryLexicographicList(LLUtils.toArray(buf));
 	}
 
 	private ByteBuf kk(ByteList bytesList) {