B3311331313231311331322331333132313331322331323133313112211231131311   >>    B331133131323131133132233133313231333132233132313331311221123113131   <<    B3311331313231311331322331333132313331322331323133313112211231131313   >>      B3311331313231311331322331333132313331322331323133313112211231131312   >>