C1111121111331311211331333133313331333133313113313113313331323221311   >>    C111112111133131121133133313331333133313331311331311331333132322131   <<    C1111121111331311211331333133313331333133313113313113313331323221313   >>      C1111121111331311211331333133313331333133313113313113313331323221312   >>