B3311331313231311331322331333132313331322121133133313331333132332313221   >>    B331133131323131133132233133313231333132212113313331333133313233231322   <<    B3311331313231311331322331333132313331322121133133313331333132332313223   >>      B3311331313231311331322331333132313331322121133133313331333132332313222   >>