B3311331313231311331322331333132313331322121133133313331333211232323221   >>    B331133131323131133132233133313231333132212113313331333133321123232322   <<    B3311331313231311331322331333132313331322121133133313331333211232323223   >>      B3311331313231311331322331333132313331322121133133313331333211232323222   >>