B3311331313231311331322331333132313331322331323133313331333231123131   >>    B331133131323131133132233133313231333132233132313331333133323112313   <<    B3311331313231311331322331333132313331322331323133313331333231123133   >>      B3311331313231311331322331333132313331322331323133313331333231123132   >>