code: def test_alignment(self):
      self._test_ok(["abcd"], ["a", "b", "c", "d"], 0)
      self._test_ok(["abc", "d"], ["a", "b", "c", "d"], 1)
      self._test_ok(["a", "bc", "d"], ["a", "b", "c", "d"], 2)
      self._test_ok(["a", "bc b c", "d"], ["a", "b", "cd"], 2)
      self._test_ok(
          ["abc a BX c", "def d EX f"],
          ["ab a b", "cd c d", "ef e f"],
          4,
      )
      self._test_ok(["ab a b", "cd bc d"], ["a", "bc", "d"], 2)
      self._test_ok(["a", "bc b c", "d"], ["ab AX BX", "cd CX a"], 1)
  
imports: from __future__ import division
  from __future__ import print_function
  import argparse
  import io
  import sys
  import unicodedata
  import unittest
label_desc: Use image node_id 7 for calling the TestAlignment obj's underlying member method code with example usage: obj.test_alignment() without return types