B3311331313231311331322331333132313331323133313233313231322331323211231   >>    B331133131323131133132233133313231333132313331323331323132233132321123   <<    B3311331313231311331322331333132313331323133313233313231322331323211233   >>      B3311331313231311331322331333132313331323133313233313231322331323211232   >>