C1111121111331311211331333133313331323131133133313331233132313232211   >>    C111112111133131121133133313331333132313113313331333123313231323221   <<    C1111121111331311211331333133313331323131133133313331233132313232213   >>      C1111121111331311211331333133313331323131133133313331233132313232212   >>