C11231323321111331312111133133313331323132313331323233221
  >>
   C1123132332111133131211113313331333132313231333132323322
  <<
   C11231323321111331312111133133313331323132313331323233223
  >>
 
 
 C11231323321111331312111133133313331323132313331323233222
  >>