diff --git a/extracted_text_test.py b/extracted_text_test.py
index 890b045..60785b7 100644
--- a/extracted_text_test.py
+++ b/extracted_text_test.py
@@ -3,6 +3,7 @@ import pytest
 from extracted_text import ExtractedText, ExtractedTextSegment
 from uniseg.graphemecluster import grapheme_clusters
 from qurator.dinglehopper import seq_align
+from collections import namedtuple
 
 
 def test_text():
@@ -24,6 +25,9 @@ def test_normalization_check():
     assert ExtractedTextSegment('foo', unicodedata.normalize('NFC', 'Schlyñ'))
 
 
+AlignmentElement = namedtuple('AlignmentElement', 'left right left_id right_id')
+
+
 def test_align():
     """
     Test aligning by character while retaining segment id info
@@ -35,20 +39,30 @@ def test_align():
     test1 = ExtractedText([
         ExtractedTextSegment('s0', 'foo'),
         ExtractedTextSegment('s1', 'bar'),
-        ExtractedTextSegment('s2', 'bazinga')
+        ExtractedTextSegment('s2', 'batzinga')
     ], ' ')
     test2 = ExtractedText([
         ExtractedTextSegment('x0', 'foo'),
         ExtractedTextSegment('x1', 'bar'),
         ExtractedTextSegment('x2', '.'),  # extra .
-        ExtractedTextSegment('x2', 'bazim̃ga'),  # different grapheme cluster, m̃ also is two Python characters
+        ExtractedTextSegment('x3', 'bazim̃ga'),  # deletion + different grapheme cluster, m̃ also is two Python characters
     ], ' ')
 
-    left_pos = 0; right_pos = 0
+    left_pos = 0; right_pos = 0; alignment = []
     for left, right in seq_align(grapheme_clusters(test1.text), grapheme_clusters(test2.text)):
-        print(left, right, test1.segment_id_for_pos(left_pos), test2.segment_id_for_pos(right_pos))
+        left_id = test1.segment_id_for_pos(left_pos) if left is not None else None
+        right_id = test2.segment_id_for_pos(right_pos) if right is not None else None
+        el = AlignmentElement(left, right, left_id, right_id)
+        alignment.append(el)
         if left is not None:
             left_pos += len(left)
         if right is not None:
             right_pos += len(right)
-    assert False
+
+    print('test1: {}'.format(test1.text))
+    print('test2: {}'.format(test2.text))
+
+    assert alignment[0]  == ('f',  'f',  's0', 'x0')
+    assert alignment[8]  == (None, '.',  None, 'x2')
+    assert alignment[12] == ('t',  None, 's2', None)
+    assert alignment[15] == ('n',  'm̃',  's2', 'x3')