B3311331313231311331322331333132313331323131323223313113313231333232321   >>    B331133131323131133132233133313231333132313132322331311331323133323232   <<    B3311331313231311331322331333132313331323131323223313113313231333232323   >>      B3311331313231311331322331333132313331323131323223313113313231333232322   >>