B3311331313231311331322331333132313331322331323133313311211111333112123131   >>    B331133131323131133132233133313231333132233132313331331121111133311212313   <<    B3311331313231311331322331333132313331322331323133313311211111333112123133   >>      B3311331313231311331322331333132313331322331323133313311211111333112123132   >>