C111123313121111121111331333133313331333132232233131211113313232332211   >>    C11112331312111112111133133313331333133313223223313121111331323233221   <<    C111123313121111121111331333133313331333132232233131211113313232332213   >>      C111123313121111121111331333133313331333132232233131211113313232332212   >>