B3311331313231311331322331333132313331323133313233313331333133313311221321   >>    B331133131323131133132233133313231333132313331323331333133313331331122132   <<    B3311331313231311331322331333132313331323133313233313331333133313311221323   >>      B3311331313231311331322331333132313331323133313233313331333133313311221322   >>