B3311331313231311331322331333132313331322331323133313331323131123313223311211   >>    B331133131323131133132233133313231333132233132313331333132313112331322331121   <<    B3311331313231311331322331333132313331322331323133313331323131123313223311213   >>      B3311331313231311331322331333132313331322331323133313331323131123313223311212   >>