C11111333133313232233133313331333133112111112113313232112313231   >>    C1111133313331323223313331333133313311211111211331323211231323   <<    C11111333133313232233133313331333133112111112113313232112313233   >>      C11111333133313232233133313331333133112111112113313232112313232   >>