C11112331312111112111133133313331333133322131131211113313331323222311311   >>    C1111233131211111211113313331333133313332213113121111331333132322231131   <<    C11112331312111112111133133313331333133322131131211113313331323222311313   >>      C11112331312111112111133133313331333133322131131211113313331323222311312   >>