B3311331313231311331322331333131133132333132333133313223313231311331221   >>    B331133131323131133132233133313113313233313233313331322331323131133122   <<    B3311331313231311331322331333131133132333132333133313223313231311331223   >>      B3311331313231311331322331333131133132333132333133313223313231311331222   >>