C11112331312111112111133133313331333133313132211312111112132313232331   >>    C1111233131211111211113313331333133313331313221131211111213231323233   <<    C11112331312111112111133133313331333133313132211312111112132313232333   >>      C11112331312111112111133133313331333133313132211312111112132313232332   >>