C11112331312111112111133132313331333133313232213331322112113233231   >>    C1111233131211111211113313231333133313331323221333132211211323323   <<    C11112331312111112111133132313331333133313232213331322112113233233   >>      C11112331312111112111133132313331333133313232213331322112113233232   >>