C1111121111331311211331333133313331323131133133313331133132231121   >>    C111112111133131121133133313331333132313113313331333113313223112   <<    C1111121111331311211331333133313331323131133133313331133132231123   >>      C1111121111331311211331333133313331323131133133313331133132231122   >>