C11111333133313232233133313331333133112111112113313331311331313121133131111   >>    C1111133313331323223313331333133313311211111211331333131133131312113313111   <<    C11111333133313232233133313331333133112111112113313331311331313121133131113   >>      C11111333133313232233133313331333133112111112113313331311331313121133131112   >>