C11111333133313232233133313331333133112111112113313331311331323233111311   >>    C1111133313331323223313331333133313311211111211331333131133132323311131   <<    C11111333133313232233133313331333133112111112113313331311331323233111313   >>      C11111333133313232233133313331333133112111112113313331311331323233111312   >>