C11111333133313232233133313331333133112111112113313331313123321   >>    C1111133313331323223313331333133313311211111211331333131312332   <<    C11111333133313232233133313331333133112111112113313331313123323   >>      C11111333133313232233133313331333133112111112113313331313123322   >>