C111123313331323113313331323133313331311331311331333133112111133113111   >>    C11112331333132311331333132313331333131133131133133313311211113311311   <<    C111123313331323113313331323133313331311331311331333133112111133113113   >>      C111123313331323113313331323133313331311331311331333133112111133113112   >>