B3311331313231311331322331333132313331322331323133313311211111333111211   >>    B331133131323131133132233133313231333132233132313331331121111133311121   <<    B3311331313231311331322331333132313331322331323133313311211111333111213   >>      B3311331313231311331322331333132313331322331323133313311211111333111212   >>