C111123313331323113313331333133313331122112312111133133313112211231333121   >>    C11112331333132311331333133313331333112211231211113313331311221123133312   <<    C111123313331323113313331333133313331122112312111133133313112211231333123   >>      C111123313331323113313331333133313331122112312111133133313112211231333122   >>