C1111121111331311211331333133313331313331323223313331311331333133313122221   >>    C111112111133131121133133313331333131333132322331333131133133313331312222   <<    C1111121111331311211331333133313331313331323223313331311331333133313122223   >>      C1111121111331311211331333133313331313331323223313331311331333133313122222   >>