B3311331313231311331322331333132313331322331323133313331333231311211   >>    B331133131323131133132233133313231333132233132313331333133323131121   <<    B3311331313231311331322331333132313331322331323133313331333231311213   >>      B3311331313231311331322331333132313331322331323133313331333231311212   >>