C111123313331323113313331333133313331323323113313331333131122233221   >>    C11112331333132311331333133313331333132332311331333133313112223322   <<    C111123313331323113313331333133313331323323113313331333131122233223   >>      C111123313331323113313331333133313331323323113313331333131122233222   >>