B3311331313231311331322331333132313331322331323133313311211111213231231   >>    B331133131323131133132233133313231333132233132313331331121111121323123   <<    B3311331313231311331322331333132313331322331323133313311211111213231233   >>      B3311331313231311331322331333132313331322331323133313311211111213231232   >>