C31232233133313221211113313331333133313331212111133133313211212131   >>    C3123223313331322121111331333133313331333121211113313331321121213   <<    C31232233133313221211113313331333133313331212111133133313211212133   >>      C31232233133313221211113313331333133313331212111133133313211212132   >>