B3311331313231311331322331333132313331323131323223313133313133313113313221   >>    B331133131323131133132233133313231333132313132322331313331313331311331322   <<    B3311331313231311331322331333132313331323131323223313133313133313113313223   >>      B3311331313231311331322331333132313331323131323223313133313133313113313222   >>