C1111233131211111211113313331323133313231333133313223313121122223131   >>    C111123313121111121111331333132313331323133313331322331312112222313   <<    C1111233131211111211113313331323133313231333133313223313121122223133   >>      C1111233131211111211113313331323133313231333133313223313121122223132   >>