C11111333133313232233133313331333133112111112113313231333131122213233231   >>    C1111133313331323223313331333133313311211111211331323133313112221323323   <<    C11111333133313232233133313331333133112111112113313231333131122213233233   >>      C11111333133313232233133313331333133112111112113313231333131122213233232   >>