C11111333133313232233133313331333133112111112113313331311221123231333132211   >>    C1111133313331323223313331333133313311211111211331333131122112323133313221   <<    C11111333133313232233133313331333133112111112113313331311221123231333132213   >>      C11111333133313232233133313331333133112111112113313331311221123231333132212   >>