C11112331312111112111133133313331333133313123313331323233123313231312311   >>    C1111233131211111211113313331333133313331312331333132323312331323131231   <<    C11112331312111112111133133313331333133313123313331323233123313231312313   >>      C11112331312111112111133133313331333133313123313331323233123313231312312   >>