rachis archis rcahis crahis acrhis carhis rahcis arhcis rhacis hracis ahrcis harcis rchais crhais rhcais hrcais chrais hcrais achris cahris ahcris hacris charis hcaris racihs arcihs rcaihs craihs acrihs carihs raichs arichs riachs irachs airchs iarchs rciahs criahs ricahs ircahs cirahs icrahs acirhs cairhs aicrhs iacrhs ciarhs icarhs rahics arhics rhaics hraics ahrics harics raihcs arihcs riahcs irahcs airhcs iarhcs rhiacs hriacs rihacs irhacs hiracs ihracs ahircs haircs aihrcs iahrcs hiarcs iharcs rchias crhias rhcias hrcias chrias hcrias rcihas crihas richas irchas cirhas icrhas rhicas hricas rihcas irhcas hircas ihrcas chiras hciras cihras ichras hicras ihcras achirs cahirs ahcirs hacirs chairs hcairs acihrs caihrs aichrs iachrs ciahrs icahrs ahicrs haicrs aihcrs iahcrs hiacrs ihacrs chiars hciars cihars ichars hicars ihcars rachsi archsi rcahsi crahsi acrhsi carhsi rahcsi arhcsi rhacsi hracsi ahrcsi harcsi rchasi crhasi rhcasi hrcasi chrasi hcrasi achrsi cahrsi ahcrsi hacrsi charsi hcarsi racshi arcshi rcashi crashi acrshi carshi raschi arschi rsachi srachi asrchi sarchi rcsahi crsahi rscahi srcahi csrahi scrahi acsrhi casrhi ascrhi sacrhi csarhi scarhi rahsci arhsci rhasci hrasci ahrsci harsci rashci arshci rsahci srahci asrhci sarhci rhsaci hrsaci rshaci srhaci hsraci shraci ahsrci hasrci ashrci sahrci hsarci sharci rchsai crhsai rhcsai hrcsai chrsai hcrsai rcshai crshai rschai srchai csrhai scrhai rhscai hrscai rshcai srhcai hsrcai shrcai chsrai hcsrai cshrai schrai hscrai shcrai achsri cahsri ahcsri hacsri chasri hcasri acshri cashri aschri sachri csahri scahri ahscri hascri ashcri sahcri hsacri shacri chsari hcsari cshari schari hscari shcari racish arcish rcaish craish acrish carish raicsh aricsh riacsh iracsh aircsh iarcsh rciash criash ricash ircash cirash icrash acirsh cairsh aicrsh iacrsh ciarsh icarsh racsih arcsih rcasih crasih acrsih carsih rascih arscih rsacih sracih asrcih sarcih rcsaih crsaih rscaih srcaih csraih scraih acsrih casrih ascrih sacrih csarih scarih raisch arisch riasch irasch airsch iarsch rasich arsich rsaich sraich asrich sarich risach irsach rsiach sriach israch sirach aisrch iasrch asirch sairch isarch siarch rcisah crisah ricsah ircsah cirsah icrsah rcsiah crsiah rsciah srciah csriah scriah riscah irscah rsicah sricah isrcah sircah cisrah icsrah csirah scirah iscrah sicrah acisrh caisrh aicsrh iacsrh ciasrh icasrh acsirh casirh ascirh sacirh csairh scairh aiscrh iascrh asicrh saicrh isacrh siacrh cisarh icsarh csiarh sciarh iscarh sicarh rahisc arhisc rhaisc hraisc ahrisc harisc raihsc arihsc riahsc irahsc airhsc iarhsc rhiasc hriasc rihasc irhasc hirasc ihrasc ahirsc hairsc aihrsc iahrsc hiarsc iharsc rahsic arhsic rhasic hrasic ahrsic harsic rashic arshic rsahic srahic asrhic sarhic rhsaic hrsaic rshaic srhaic hsraic shraic ahsric hasric ashric sahric hsaric sharic raishc arishc riashc irashc airshc iarshc rasihc arsihc rsaihc sraihc asrihc sarihc risahc irsahc rsiahc sriahc israhc sirahc aisrhc iasrhc asirhc sairhc isarhc siarhc rhisac hrisac rihsac irhsac hirsac ihrsac rhsiac hrsiac rshiac srhiac hsriac shriac rishac irshac rsihac srihac isrhac sirhac hisrac ihsrac hsirac shirac ishrac sihrac ahisrc haisrc aihsrc iahsrc hiasrc ihasrc ahsirc hasirc ashirc sahirc hsairc shairc aishrc iashrc asihrc saihrc isahrc siahrc hisarc ihsarc hsiarc shiarc isharc siharc rchisa crhisa rhcisa hrcisa chrisa hcrisa rcihsa crihsa richsa irchsa cirhsa icrhsa rhicsa hricsa rihcsa irhcsa hircsa ihrcsa chirsa hcirsa cihrsa ichrsa hicrsa ihcrsa rchsia crhsia rhcsia hrcsia chrsia hcrsia rcshia crshia rschia srchia csrhia scrhia rhscia hrscia rshcia srhcia hsrcia shrcia chsria hcsria cshria schria hscria shcria rcisha crisha ricsha ircsha cirsha icrsha rcsiha crsiha rsciha srciha csriha scriha rischa irscha rsicha sricha isrcha sircha cisrha icsrha csirha scirha iscrha sicrha rhisca hrisca rihsca irhsca hirsca ihrsca rhsica hrsica rshica srhica hsrica shrica rishca irshca rsihca srihca isrhca sirhca hisrca ihsrca hsirca shirca ishrca sihrca chisra hcisra cihsra ichsra hicsra ihcsra chsira hcsira cshira schira hscira shcira cishra icshra csihra scihra ischra sichra hiscra ihscra hsicra shicra ishcra sihcra achisr cahisr ahcisr hacisr chaisr hcaisr acihsr caihsr aichsr iachsr ciahsr icahsr ahicsr haicsr aihcsr iahcsr hiacsr ihacsr chiasr hciasr cihasr ichasr hicasr ihcasr achsir cahsir ahcsir hacsir chasir hcasir acshir cashir aschir sachir csahir scahir ahscir hascir ashcir sahcir hsacir shacir chsair hcsair cshair schair hscair shcair acishr caishr aicshr iacshr ciashr icashr acsihr casihr ascihr sacihr csaihr scaihr aischr iaschr asichr saichr isachr siachr cisahr icsahr csiahr sciahr iscahr sicahr ahiscr haiscr aihscr iahscr hiascr ihascr ahsicr hasicr ashicr sahicr hsaicr shaicr aishcr iashcr asihcr saihcr isahcr siahcr hisacr ihsacr hsiacr shiacr ishacr sihacr chisar hcisar cihsar ichsar hicsar ihcsar chsiar hcsiar cshiar schiar hsciar shciar cishar icshar csihar scihar ischar sichar hiscar ihscar hsicar shicar ishcar sihcar
Note: these 'words' (valid or invalid) are all the permutations of the word rachis. These words are obtained by scrambling the letters in rachis.