C111123313331323113313331323133313331311331311331333133112111133132213231322321   >>    C11112331333132311331333132313331333131133131133133313311211113313221323132232   <<    C111123313331323113313331323133313331311331311331333133112111133132213231322323   >>      C111123313331323113313331323133313331311331311331333133112111133132213231322322   >>