B3311331313231311331322331333132313331322331323133313311232313233313221   >>    B331133131323131133132233133313231333132233132313331331123231323331322   <<    B3311331313231311331322331333132313331322331323133313311232313233313223   >>      B3311331313231311331322331333132313331322331323133313311232313233313222   >>