C11112331312111112111133133313331333133313132211312111113111211   >>    C1111233131211111211113313331333133313331313221131211111311121   <<    C11112331312111112111133133313331333133313132211312111113111213   >>      C11112331312111112111133133313331333133313132211312111113111212   >>