B3311331313231311331322331333132313331323133313233313331333132322221211   >>    B331133131323131133132233133313231333132313331323331333133313232222121   <<    B3311331313231311331322331333132313331323133313233313331333132322221213   >>      B3311331313231311331322331333132313331323133313233313331333132322221212   >>