C111123313121111121111331323133313233313232233132313331323221211   >>    C11112331312111112111133132313331323331323223313231333132322121   <<    C111123313121111121111331323133313233313232233132313331323221213   >>      C111123313121111121111331323133313233313232233132313331323221212   >>