C111123313331323113313331333133313331322331313312111133132213121   >>    C11112331333132311331333133313331333132233131331211113313221312   <<    C111123313331323113313331333133313331322331313312111133132213123   >>      C111123313331323113313331333133313331322331313312111133132213122   >>