C111123313121111121111331333132313331323112121111331333133313211212131   >>    C11112331312111112111133133313231333132311212111133133313331321121213   <<    C111123313121111121111331333132313331323112121111331333133313211212133   >>      C111123313121111121111331333132313331323112121111331333133313211212132   >>