C111123313331323113313331333133313331122112312111133131331123231333131   >>    C11112331333132311331333133313331333112211231211113313133112323133313   <<    C111123313331323113313331333133313331122112312111133131331123231333133   >>      C111123313331323113313331333133313331122112312111133131331123231333132   >>