C1111121111331311211331333133313331313331323223313331323221213113121   >>    C111112111133131121133133313331333131333132322331333132322121311312   <<    C1111121111331311211331333133313331313331323223313331323221213113123   >>      C1111121111331311211331333133313331313331323223313331323221213113122   >>