C111123313331323113313331333133313331322331313312111133132221211   >>    C11112331333132311331333133313331333132233131331211113313222121   <<    C111123313331323113313331333133313331322331313312111133132221213   >>      C111123313331323113313331333133313331322331313312111133132221212   >>