diff --git a/morph/src/main/java/org/apache/lucene/morphology/BaseLetterDecoderEncoder.java b/morph/src/main/java/org/apache/lucene/morphology/BaseLetterDecoderEncoder.java
new file mode 100644
index 0000000..0598d92
--- /dev/null
+++ b/morph/src/main/java/org/apache/lucene/morphology/BaseLetterDecoderEncoder.java
@@ -0,0 +1,55 @@
+/**
+ * Copyright 2009 Alexander Kuznetsov
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.lucene.morphology;
+
+import java.util.ArrayList;
+
+
+public abstract class BaseLetterDecoderEncoder implements LetterDecoderEncoder {
+    public int[] encodeToArray(String s) {
+        ArrayList<Integer> integers = new ArrayList<Integer>();
+        while (s.length() > 6) {
+            integers.add(encode(s.substring(0, 6)));
+            s = s.substring(6);
+        }
+        integers.add(encode(s));
+        int[] ints = new int[integers.size()];
+        int pos = 0;
+        for (Integer i : integers) {
+            ints[pos] = i;
+            pos++;
+        }
+        return ints;
+    }
+
+    public String decodeArray(int[] array) {
+        String result = "";
+        for (int i : array) {
+            result += decode(i);
+        }
+        return result;
+    }
+
+    public boolean checkString(String word) {
+        for (int i = 0; i < word.length(); i++) {
+            if (!checkCharacter(word.charAt(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
+}