C1111121111331311211331333133313331333132213331333132313232212111   >>    C111112111133131121133133313331333133313221333133313231323221211   <<    C1111121111331311211331333133313331333132213331333132313232212113   >>      C1111121111331311211331333133313331333132213331333132313232212112   >>