C1111121111331311211331333133313331333133313232212111133131221221   >>    C111112111133131121133133313331333133313331323221211113313122122   <<    C1111121111331311211331333133313331333133313232212111133131221223   >>      C1111121111331311211331333133313331333133313232212111133131221222   >>