B3311331313231311331322331333132313331322331323133313331311332233112121   >>    B331133131323131133132233133313231333132233132313331333131133223311212   <<    B3311331313231311331322331333132313331322331323133313331311332233112123   >>      B3311331313231311331322331333132313331322331323133313331311332233112122   >>