B3311331313231311331322331333132313331322331323133313113313232113311232321   >>    B331133131323131133132233133313231333132233132313331311331323211331123232   <<    B3311331313231311331322331333132313331322331323133313113313232113311232323   >>      B3311331313231311331322331333132313331322331323133313113313232113311232322   >>