B3311331313231311331322331333132313331322331323133313331323133112211311   >>    B331133131323131133132233133313231333132233132313331333132313311221131   <<    B3311331313231311331322331333132313331322331323133313331323133112211313   >>      B3311331313231311331322331333132313331322331323133313331323133112211312   >>