B3311331313231311331322331333132313331322331323133313311211111221311212321   >>    B331133131323131133132233133313231333132233132313331331121111122131121232   <<    B3311331313231311331322331333132313331322331323133313311211111221311212323   >>      B3311331313231311331322331333132313331322331323133313311211111221311212322   >>