B3311331313231311331322331333132313331323131323223313331311331311313221   >>    B331133131323131133132233133313231333132313132322331333131133131131322   <<    B3311331313231311331322331333132313331323131323223313331311331311313223   >>      B3311331313231311331322331333132313331323131323223313331311331311313222   >>