C1111121111331311211331333133313331323131133133313331133132211212121   >>    C111112111133131121133133313331333132313113313331333113313221121212   <<    C1111121111331311211331333133313331323131133133313331133132211212123   >>      C1111121111331311211331333133313331323131133133313331133132211212122   >>