C111123313331323113313331333133313331122112312111133133313331333132322323311   >>    C11112331333132311331333133313331333112211231211113313331333133313232232331   <<    C111123313331323113313331333133313331122112312111133133313331333132322323313   >>      C111123313331323113313331333133313331122112312111133133313331333132322323312   >>