C111123313331323113313331323133313331311331311331333133112111111331322333231   >>    C11112331333132311331333132313331333131133131133133313311211111133132233323   <<    C111123313331323113313331323133313331311331311331333133112111111331322333233   >>      C111123313331323113313331323133313331311331311331333133112111111331322333232   >>