choirs hcoirs cohirs ochirs hocirs ohcirs chiors hciors cihors ichors hicors ihcors coihrs ocihrs ciohrs icohrs oichrs iochrs hoicrs ohicrs hiocrs ihocrs oihcrs iohcrs choris hcoris cohris ochris hocris ohcris chrois hcrois crhois rchois hrcois rhcois corhis ocrhis crohis rcohis orchis rochis horcis ohrcis hrocis rhocis orhcis rohcis chiros hciros cihros ichros hicros ihcros chrios hcrios crhios rchios hrcios rhcios cirhos icrhos crihos rcihos irchos richos hircos ihrcos hricos rhicos irhcos rihcos coirhs ocirhs ciorhs icorhs oicrhs iocrhs corihs ocrihs croihs rcoihs orcihs rocihs cirohs icrohs criohs rciohs ircohs ricohs oirchs iorchs orichs roichs irochs riochs hoircs ohircs hiorcs ihorcs oihrcs iohrcs horics ohrics hroics rhoics orhics rohics hirocs ihrocs hriocs rhiocs irhocs rihocs oirhcs iorhcs orihcs roihcs irohcs riohcs choisr hcoisr cohisr ochisr hocisr ohcisr chiosr hciosr cihosr ichosr hicosr ihcosr coihsr ocihsr ciohsr icohsr oichsr iochsr hoicsr ohicsr hiocsr ihocsr oihcsr iohcsr chosir hcosir cohsir ochsir hocsir ohcsir chsoir hcsoir cshoir schoir hscoir shcoir coshir ocshir csohir scohir oschir sochir hoscir ohscir hsocir shocir oshcir sohcir chisor hcisor cihsor ichsor hicsor ihcsor chsior hcsior cshior schior hscior shcior cishor icshor csihor scihor ischor sichor hiscor ihscor hsicor shicor ishcor sihcor coishr ocishr cioshr icoshr oicshr iocshr cosihr ocsihr csoihr scoihr oscihr socihr cisohr icsohr csiohr sciohr iscohr sicohr oischr ioschr osichr soichr isochr siochr hoiscr ohiscr hioscr ihoscr oihscr iohscr hosicr ohsicr hsoicr shoicr oshicr sohicr hisocr ihsocr hsiocr shiocr ishocr sihocr oishcr ioshcr osihcr soihcr isohcr siohcr chorsi hcorsi cohrsi ochrsi hocrsi ohcrsi chrosi hcrosi crhosi rchosi hrcosi rhcosi corhsi ocrhsi crohsi rcohsi orchsi rochsi horcsi ohrcsi hrocsi rhocsi orhcsi rohcsi chosri hcosri cohsri ochsri hocsri ohcsri chsori hcsori cshori schori hscori shcori coshri ocshri csohri scohri oschri sochri hoscri ohscri hsocri shocri oshcri sohcri chrsoi hcrsoi crhsoi rchsoi hrcsoi rhcsoi chsroi hcsroi cshroi schroi hscroi shcroi crshoi rcshoi csrhoi scrhoi rschoi srchoi hrscoi rhscoi hsrcoi shrcoi rshcoi srhcoi corshi ocrshi croshi rcoshi orcshi rocshi cosrhi ocsrhi csorhi scorhi oscrhi socrhi crsohi rcsohi csrohi scrohi rscohi srcohi orschi roschi osrchi sorchi rsochi srochi horsci ohrsci hrosci rhosci orhsci rohsci hosrci ohsrci hsorci shorci oshrci sohrci hrsoci rhsoci hsroci shroci rshoci srhoci orshci roshci osrhci sorhci rsohci srohci chirso hcirso cihrso ichrso hicrso ihcrso chriso hcriso crhiso rchiso hrciso rhciso cirhso icrhso crihso rcihso irchso richso hircso ihrcso hricso rhicso irhcso rihcso chisro hcisro cihsro ichsro hicsro ihcsro chsiro hcsiro cshiro schiro hsciro shciro cishro icshro csihro scihro ischro sichro hiscro ihscro hsicro shicro ishcro sihcro chrsio hcrsio crhsio rchsio hrcsio rhcsio chsrio hcsrio cshrio schrio hscrio shcrio crshio rcshio csrhio scrhio rschio srchio hrscio rhscio hsrcio shrcio rshcio srhcio cirsho icrsho crisho rcisho ircsho ricsho cisrho icsrho csirho scirho iscrho sicrho crsiho rcsiho csriho scriho rsciho srciho irscho rischo isrcho sircho rsicho sricho hirsco ihrsco hrisco rhisco irhsco rihsco hisrco ihsrco hsirco shirco ishrco sihrco hrsico rhsico hsrico shrico rshico srhico irshco rishco isrhco sirhco rsihco srihco coirsh ocirsh ciorsh icorsh oicrsh iocrsh corish ocrish croish rcoish orcish rocish cirosh icrosh criosh rciosh ircosh ricosh oircsh iorcsh oricsh roicsh irocsh riocsh coisrh ocisrh ciosrh icosrh oicsrh iocsrh cosirh ocsirh csoirh scoirh oscirh socirh cisorh icsorh csiorh sciorh iscorh sicorh oiscrh ioscrh osicrh soicrh isocrh siocrh corsih ocrsih crosih rcosih orcsih rocsih cosrih ocsrih csorih scorih oscrih socrih crsoih rcsoih csroih scroih rscoih srcoih orscih roscih osrcih sorcih rsocih srocih cirsoh icrsoh crisoh rcisoh ircsoh ricsoh cisroh icsroh csiroh sciroh iscroh sicroh crsioh rcsioh csrioh scrioh rscioh srcioh irscoh riscoh isrcoh sircoh rsicoh sricoh oirsch iorsch orisch roisch irosch riosch oisrch iosrch osirch soirch isorch siorch orsich rosich osrich sorich rsoich sroich irsoch risoch isroch siroch rsioch srioch hoirsc ohirsc hiorsc ihorsc oihrsc iohrsc horisc ohrisc hroisc rhoisc orhisc rohisc hirosc ihrosc hriosc rhiosc irhosc rihosc oirhsc iorhsc orihsc roihsc irohsc riohsc hoisrc ohisrc hiosrc ihosrc oihsrc iohsrc hosirc ohsirc hsoirc shoirc oshirc sohirc hisorc ihsorc hsiorc shiorc ishorc sihorc oishrc ioshrc osihrc soihrc isohrc siohrc horsic ohrsic hrosic rhosic orhsic rohsic hosric ohsric hsoric shoric oshric sohric hrsoic rhsoic hsroic shroic rshoic srhoic orshic roshic osrhic sorhic rsohic srohic hirsoc ihrsoc hrisoc rhisoc irhsoc rihsoc hisroc ihsroc hsiroc shiroc ishroc sihroc hrsioc rhsioc hsrioc shrioc rshioc srhioc irshoc rishoc isrhoc sirhoc rsihoc srihoc oirshc iorshc orishc roishc iroshc rioshc oisrhc iosrhc osirhc soirhc isorhc siorhc orsihc rosihc osrihc sorihc rsoihc sroihc irsohc risohc isrohc sirohc rsiohc sriohc
Note: these 'words' (valid or invalid) are all the permutations of the word choirs. These words are obtained by scrambling the letters in choirs.