B3311331313231311331322331333132313331322331323133313331311223221321   >>    B331133131323131133132233133313231333132233132313331333131122322132   <<    B3311331313231311331322331333132313331322331323133313331311223221323   >>      B3311331313231311331322331333132313331322331323133313331311223221322   >>