lumbar ulmbar lmubar mlubar umlbar mulbar lubmar ulbmar lbumar blumar ublmar bulmar lmbuar mlbuar lbmuar blmuar mbluar bmluar umblar mublar ubmlar bumlar mbular bmular lumabr ulmabr lmuabr mluabr umlabr mulabr luambr ulambr laumbr alumbr ualmbr aulmbr lmaubr mlaubr lamubr almubr malubr amlubr umalbr mualbr uamlbr aumlbr maulbr amulbr lubamr ulbamr lbuamr bluamr ublamr bulamr luabmr ulabmr laubmr alubmr ualbmr aulbmr lbaumr blaumr labumr albumr balumr ablumr ubalmr bualmr uablmr aublmr baulmr abulmr lmbaur mlbaur lbmaur blmaur mblaur bmlaur lmabur mlabur lambur almbur malbur amlbur lbamur blamur labmur albmur balmur ablmur mbalur bmalur mablur amblur bamlur abmlur umbalr mubalr ubmalr bumalr mbualr bmualr umablr muablr uamblr aumblr maublr amublr ubamlr buamlr uabmlr aubmlr baumlr abumlr mbaulr bmaulr mabulr ambulr bamulr abmulr lumbra ulmbra lmubra mlubra umlbra mulbra lubmra ulbmra lbumra blumra ublmra bulmra lmbura mlbura lbmura blmura mblura bmlura umblra mublra ubmlra bumlra mbulra bmulra lumrba ulmrba lmurba mlurba umlrba mulrba lurmba ulrmba lrumba rlumba urlmba rulmba lmruba mlruba lrmuba rlmuba mrluba rmluba umrlba murlba urmlba rumlba mrulba rmulba lubrma ulbrma lburma blurma ublrma bulrma lurbma ulrbma lrubma rlubma urlbma rulbma lbruma blruma lrbuma rlbuma brluma rbluma ubrlma burlma urblma rublma brulma rbulma lmbrua mlbrua lbmrua blmrua mblrua bmlrua lmrbua mlrbua lrmbua rlmbua mrlbua rmlbua lbrmua blrmua lrbmua rlbmua brlmua rblmua mbrlua bmrlua mrblua rmblua brmlua rbmlua umbrla mubrla ubmrla bumrla mburla bmurla umrbla murbla urmbla rumbla mrubla rmubla ubrmla burmla urbmla rubmla brumla rbumla mbrula bmrula mrbula rmbula brmula rbmula lumarb ulmarb lmuarb mluarb umlarb mularb luamrb ulamrb laumrb alumrb ualmrb aulmrb lmaurb mlaurb lamurb almurb malurb amlurb umalrb mualrb uamlrb aumlrb maulrb amulrb lumrab ulmrab lmurab mlurab umlrab mulrab lurmab ulrmab lrumab rlumab urlmab rulmab lmruab mlruab lrmuab rlmuab mrluab rmluab umrlab murlab urmlab rumlab mrulab rmulab luarmb ularmb laurmb alurmb ualrmb aulrmb luramb ulramb lruamb rluamb urlamb rulamb larumb alrumb lraumb rlaumb arlumb ralumb uarlmb aurlmb uralmb rualmb arulmb raulmb lmarub mlarub lamrub almrub malrub amlrub lmraub mlraub lrmaub rlmaub mrlaub rmlaub larmub alrmub lramub rlamub arlmub ralmub marlub amrlub mralub rmalub armlub ramlub umarlb muarlb uamrlb aumrlb maurlb amurlb umralb muralb urmalb rumalb mrualb rmualb uarmlb aurmlb uramlb ruamlb arumlb raumlb marulb amrulb mraulb rmaulb armulb ramulb lubarm ulbarm lbuarm bluarm ublarm bularm luabrm ulabrm laubrm alubrm ualbrm aulbrm lbaurm blaurm laburm alburm balurm ablurm ubalrm bualrm uablrm aublrm baulrm abulrm lubram ulbram lburam bluram ublram bulram lurbam ulrbam lrubam rlubam urlbam rulbam lbruam blruam lrbuam rlbuam brluam rbluam ubrlam burlam urblam rublam brulam rbulam luarbm ularbm laurbm alurbm ualrbm aulrbm lurabm ulrabm lruabm rluabm urlabm rulabm larubm alrubm lraubm rlaubm arlubm ralubm uarlbm aurlbm uralbm rualbm arulbm raulbm lbarum blarum labrum albrum balrum ablrum lbraum blraum lrbaum rlbaum brlaum rblaum larbum alrbum lrabum rlabum arlbum ralbum barlum abrlum bralum rbalum arblum rablum ubarlm buarlm uabrlm aubrlm baurlm aburlm ubralm buralm urbalm rubalm brualm rbualm uarblm aurblm urablm ruablm arublm raublm barulm abrulm braulm rbaulm arbulm rabulm lmbaru mlbaru lbmaru blmaru mblaru bmlaru lmabru mlabru lambru almbru malbru amlbru lbamru blamru labmru albmru balmru ablmru mbalru bmalru mablru amblru bamlru abmlru lmbrau mlbrau lbmrau blmrau mblrau bmlrau lmrbau mlrbau lrmbau rlmbau mrlbau rmlbau lbrmau blrmau lrbmau rlbmau brlmau rblmau mbrlau bmrlau mrblau rmblau brmlau rbmlau lmarbu mlarbu lamrbu almrbu malrbu amlrbu lmrabu mlrabu lrmabu rlmabu mrlabu rmlabu larmbu alrmbu lrambu rlambu arlmbu ralmbu marlbu amrlbu mralbu rmalbu armlbu ramlbu lbarmu blarmu labrmu albrmu balrmu ablrmu lbramu blramu lrbamu rlbamu brlamu rblamu larbmu alrbmu lrabmu rlabmu arlbmu ralbmu barlmu abrlmu bralmu rbalmu arblmu rablmu mbarlu bmarlu mabrlu ambrlu bamrlu abmrlu mbralu bmralu mrbalu rmbalu brmalu rbmalu marblu amrblu mrablu rmablu armblu ramblu barmlu abrmlu bramlu rbamlu arbmlu rabmlu umbarl mubarl ubmarl bumarl mbuarl bmuarl umabrl muabrl uambrl aumbrl maubrl amubrl ubamrl buamrl uabmrl aubmrl baumrl abumrl mbaurl bmaurl maburl amburl bamurl abmurl umbral mubral ubmral bumral mbural bmural umrbal murbal urmbal rumbal mrubal rmubal ubrmal burmal urbmal rubmal brumal rbumal mbrual bmrual mrbual rmbual brmual rbmual umarbl muarbl uamrbl aumrbl maurbl amurbl umrabl murabl urmabl rumabl mruabl rmuabl uarmbl aurmbl urambl ruambl arumbl raumbl marubl amrubl mraubl rmaubl armubl ramubl ubarml buarml uabrml aubrml baurml aburml ubraml buraml urbaml rubaml bruaml rbuaml uarbml aurbml urabml ruabml arubml raubml baruml abruml brauml rbauml arbuml rabuml mbarul bmarul mabrul ambrul bamrul abmrul mbraul bmraul mrbaul rmbaul brmaul rbmaul marbul amrbul mrabul rmabul armbul rambul barmul abrmul bramul rbamul arbmul rabmul
Note: these 'words' (valid or invalid) are all the permutations of the word lumbar. These words are obtained by scrambling the letters in lumbar.