blacks lbacks balcks ablcks labcks albcks blcaks lbcaks bclaks cblaks lcbaks clbaks baclks abclks bcalks cbalks acblks cablks lacbks alcbks lcabks clabks aclbks calbks blakcs lbakcs balkcs ablkcs labkcs albkcs blkacs lbkacs bklacs kblacs lkbacs klbacs baklcs abklcs bkalcs kbalcs akblcs kablcs lakbcs alkbcs lkabcs klabcs aklbcs kalbcs blckas lbckas bclkas cblkas lcbkas clbkas blkcas lbkcas bklcas kblcas lkbcas klbcas bcklas cbklas bkclas kbclas ckblas kcblas lckbas clkbas lkcbas klcbas cklbas kclbas backls abckls bcakls cbakls acbkls cabkls bakcls abkcls bkacls kbacls akbcls kabcls bckals cbkals bkcals kbcals ckbals kcbals ackbls cakbls akcbls kacbls ckabls kcabls lackbs alckbs lcakbs clakbs aclkbs calkbs lakcbs alkcbs lkacbs klacbs aklcbs kalcbs lckabs clkabs lkcabs klcabs cklabs kclabs acklbs caklbs akclbs kaclbs ckalbs kcalbs blacsk lbacsk balcsk ablcsk labcsk albcsk blcask lbcask bclask cblask lcbask clbask baclsk abclsk bcalsk cbalsk acblsk cablsk lacbsk alcbsk lcabsk clabsk aclbsk calbsk blasck lbasck balsck ablsck labsck albsck blsack lbsack bslack sblack lsback slback baslck abslck bsalck sbalck asblck sablck lasbck alsbck lsabck slabck aslbck salbck blcsak lbcsak bclsak cblsak lcbsak clbsak blscak lbscak bslcak sblcak lsbcak slbcak bcslak cbslak bsclak sbclak csblak scblak lcsbak clsbak lscbak slcbak cslbak sclbak bacslk abcslk bcaslk cbaslk acbslk cabslk basclk absclk bsaclk sbaclk asbclk sabclk bcsalk cbsalk bscalk sbcalk csbalk scbalk acsblk casblk ascblk sacblk csablk scablk lacsbk alcsbk lcasbk clasbk aclsbk calsbk lascbk alscbk lsacbk slacbk aslcbk salcbk lcsabk clsabk lscabk slcabk cslabk sclabk acslbk caslbk asclbk saclbk csalbk scalbk blaksc lbaksc balksc ablksc labksc albksc blkasc lbkasc bklasc kblasc lkbasc klbasc baklsc abklsc bkalsc kbalsc akblsc kablsc lakbsc alkbsc lkabsc klabsc aklbsc kalbsc blaskc lbaskc balskc ablskc labskc albskc blsakc lbsakc bslakc sblakc lsbakc slbakc baslkc abslkc bsalkc sbalkc asblkc sablkc lasbkc alsbkc lsabkc slabkc aslbkc salbkc blksac lbksac bklsac kblsac lkbsac klbsac blskac lbskac bslkac sblkac lsbkac slbkac bkslac kbslac bsklac sbklac ksblac skblac lksbac klsbac lskbac slkbac kslbac sklbac bakslc abkslc bkaslc kbaslc akbslc kabslc basklc absklc bsaklc sbaklc asbklc sabklc bksalc kbsalc bskalc sbkalc ksbalc skbalc aksblc kasblc askblc sakblc ksablc skablc laksbc alksbc lkasbc klasbc aklsbc kalsbc laskbc alskbc lsakbc slakbc aslkbc salkbc lksabc klsabc lskabc slkabc kslabc sklabc akslbc kaslbc asklbc saklbc ksalbc skalbc blcksa lbcksa bclksa cblksa lcbksa clbksa blkcsa lbkcsa bklcsa kblcsa lkbcsa klbcsa bcklsa cbklsa bkclsa kbclsa ckblsa kcblsa lckbsa clkbsa lkcbsa klcbsa cklbsa kclbsa blcska lbcska bclska cblska lcbska clbska blscka lbscka bslcka sblcka lsbcka slbcka bcslka cbslka bsclka sbclka csblka scblka lcsbka clsbka lscbka slcbka cslbka sclbka blksca lbksca bklsca kblsca lkbsca klbsca blskca lbskca bslkca sblkca lsbkca slbkca bkslca kbslca bsklca sbklca ksblca skblca lksbca klsbca lskbca slkbca kslbca sklbca bcksla cbksla bkcsla kbcsla ckbsla kcbsla bcskla cbskla bsckla sbckla csbkla scbkla bkscla kbscla bskcla sbkcla ksbcla skbcla cksbla kcsbla cskbla sckbla kscbla skcbla lcksba clksba lkcsba klcsba cklsba kclsba lcskba clskba lsckba slckba cslkba sclkba lkscba klscba lskcba slkcba kslcba sklcba ckslba kcslba csklba scklba ksclba skclba backsl abcksl bcaksl cbaksl acbksl cabksl bakcsl abkcsl bkacsl kbacsl akbcsl kabcsl bckasl cbkasl bkcasl kbcasl ckbasl kcbasl ackbsl cakbsl akcbsl kacbsl ckabsl kcabsl bacskl abcskl bcaskl cbaskl acbskl cabskl basckl absckl bsackl sbackl asbckl sabckl bcsakl cbsakl bscakl sbcakl csbakl scbakl acsbkl casbkl ascbkl sacbkl csabkl scabkl bakscl abkscl bkascl kbascl akbscl kabscl baskcl abskcl bsakcl sbakcl asbkcl sabkcl bksacl kbsacl bskacl sbkacl ksbacl skbacl aksbcl kasbcl askbcl sakbcl ksabcl skabcl bcksal cbksal bkcsal kbcsal ckbsal kcbsal bcskal cbskal bsckal sbckal csbkal scbkal bkscal kbscal bskcal sbkcal ksbcal skbcal cksbal kcsbal cskbal sckbal kscbal skcbal acksbl caksbl akcsbl kacsbl ckasbl kcasbl acskbl caskbl asckbl sackbl csakbl scakbl akscbl kascbl askcbl sakcbl ksacbl skacbl cksabl kcsabl cskabl sckabl kscabl skcabl lacksb alcksb lcaksb claksb aclksb calksb lakcsb alkcsb lkacsb klacsb aklcsb kalcsb lckasb clkasb lkcasb klcasb cklasb kclasb acklsb caklsb akclsb kaclsb ckalsb kcalsb lacskb alcskb lcaskb claskb aclskb calskb lasckb alsckb lsackb slackb aslckb salckb lcsakb clsakb lscakb slcakb cslakb sclakb acslkb caslkb asclkb saclkb csalkb scalkb lakscb alkscb lkascb klascb aklscb kalscb laskcb alskcb lsakcb slakcb aslkcb salkcb lksacb klsacb lskacb slkacb kslacb sklacb akslcb kaslcb asklcb saklcb ksalcb skalcb lcksab clksab lkcsab klcsab cklsab kclsab lcskab clskab lsckab slckab cslkab sclkab lkscab klscab lskcab slkcab kslcab sklcab ckslab kcslab csklab scklab ksclab skclab ackslb cakslb akcslb kacslb ckaslb kcaslb acsklb casklb ascklb sacklb csaklb scaklb aksclb kasclb askclb sakclb ksaclb skaclb cksalb kcsalb cskalb sckalb kscalb skcalb
Note: these 'words' (valid or invalid) are all the permutations of the word blacks. These words are obtained by scrambling the letters in blacks.