B3311331313231311331322331333132313331322331323133313331323133323213311231   >>    B331133131323131133132233133313231333132233132313331333132313332321331123   <<    B3311331313231311331322331333132313331322331323133313331323133323213311233   >>      B3311331313231311331322331333132313331322331323133313331323133323213311232   >>