C1111121111331311211331333133313331313331323223313331311211112111   >>    C111112111133131121133133313331333131333132322331333131121111211   <<    C1111121111331311211331333133313331313331323223313331311211112113   >>      C1111121111331311211331333133313331313331323223313331311211112112   >>