C11112331312111112111133133313331333133313132211312111133132322112111333131321   >>    C1111233131211111211113313331333133313331313221131211113313232211211133313132   <<    C11112331312111112111133133313331333133313132211312111133132322112111333131323   >>      C11112331312111112111133133313331333133313132211312111133132322112111333131322   >>