dudish uddish dduish dduish uddish dudish duidsh udidsh diudsh idudsh uiddsh iuddsh ddiush ddiush didush iddush didush iddush udidsh duidsh uiddsh iuddsh diudsh idudsh dudsih uddsih ddusih ddusih uddsih dudsih dusdih udsdih dsudih sdudih usddih suddih ddsuih ddsuih dsduih sdduih dsduih sdduih udsdih dusdih usddih suddih dsudih sdudih duisdh udisdh diusdh idusdh uidsdh iudsdh dusidh udsidh dsuidh sduidh usdidh sudidh disudh idsudh dsiudh sdiudh isdudh sidudh uisddh iusddh usiddh suiddh isuddh siuddh ddisuh ddisuh didsuh iddsuh didsuh iddsuh ddsiuh ddsiuh dsdiuh sddiuh dsdiuh sddiuh disduh idsduh dsiduh sdiduh isdduh sidduh disduh idsduh dsiduh sdiduh isdduh sidduh udisdh duisdh uidsdh iudsdh diusdh idusdh udsidh dusidh usdidh sudidh dsuidh sduidh uisddh iusddh usiddh suiddh isuddh siuddh disudh idsudh dsiudh sdiudh isdudh sidudh dudihs uddihs dduihs dduihs uddihs dudihs duidhs udidhs diudhs idudhs uiddhs iuddhs ddiuhs ddiuhs diduhs idduhs diduhs idduhs udidhs duidhs uiddhs iuddhs diudhs idudhs dudhis uddhis dduhis dduhis uddhis dudhis duhdis udhdis dhudis hdudis uhddis huddis ddhuis ddhuis dhduis hdduis dhduis hdduis udhdis duhdis uhddis huddis dhudis hdudis duihds udihds diuhds iduhds uidhds iudhds duhids udhids dhuids hduids uhdids hudids dihuds idhuds dhiuds hdiuds ihduds hiduds uihdds iuhdds uhidds huidds ihudds hiudds ddihus ddihus didhus iddhus didhus iddhus ddhius ddhius dhdius hddius dhdius hddius dihdus idhdus dhidus hdidus ihddus hiddus dihdus idhdus dhidus hdidus ihddus hiddus udihds duihds uidhds iudhds diuhds iduhds udhids duhids uhdids hudids dhuids hduids uihdds iuhdds uhidds huidds ihudds hiudds dihuds idhuds dhiuds hdiuds ihduds hiduds dudshi uddshi ddushi ddushi uddshi dudshi dusdhi udsdhi dsudhi sdudhi usddhi suddhi ddsuhi ddsuhi dsduhi sdduhi dsduhi sdduhi udsdhi dusdhi usddhi suddhi dsudhi sdudhi dudhsi uddhsi dduhsi dduhsi uddhsi dudhsi duhdsi udhdsi dhudsi hdudsi uhddsi huddsi ddhusi ddhusi dhdusi hddusi dhdusi hddusi udhdsi duhdsi uhddsi huddsi dhudsi hdudsi dushdi udshdi dsuhdi sduhdi usdhdi sudhdi duhsdi udhsdi dhusdi hdusdi uhdsdi hudsdi dshudi sdhudi dhsudi hdsudi shdudi hsdudi ushddi suhddi uhsddi husddi shuddi hsuddi ddshui ddshui dsdhui sddhui dsdhui sddhui ddhsui ddhsui dhdsui hddsui dhdsui hddsui dshdui sdhdui dhsdui hdsdui shddui hsddui dshdui sdhdui dhsdui hdsdui shddui hsddui udshdi dushdi usdhdi sudhdi dsuhdi sduhdi udhsdi duhsdi uhdsdi hudsdi dhusdi hdusdi ushddi suhddi uhsddi husddi shuddi hsuddi dshudi sdhudi dhsudi hdsudi shdudi hsdudi duishd udishd diushd idushd uidshd iudshd dusihd udsihd dsuihd sduihd usdihd sudihd disuhd idsuhd dsiuhd sdiuhd isduhd siduhd uisdhd iusdhd usidhd suidhd isudhd siudhd duihsd udihsd diuhsd iduhsd uidhsd iudhsd duhisd udhisd dhuisd hduisd uhdisd hudisd dihusd idhusd dhiusd hdiusd ihdusd hidusd uihdsd iuhdsd uhidsd huidsd ihudsd hiudsd dushid udshid dsuhid sduhid usdhid sudhid duhsid udhsid dhusid hdusid uhdsid hudsid dshuid sdhuid dhsuid hdsuid shduid hsduid ushdid suhdid uhsdid husdid shudid hsudid dishud idshud dsihud sdihud isdhud sidhud dihsud idhsud dhisud hdisud ihdsud hidsud dshiud sdhiud dhsiud hdsiud shdiud hsdiud ishdud sihdud ihsdud hisdud shidud hsidud uishdd iushdd usihdd suihdd isuhdd siuhdd uihsdd iuhsdd uhisdd huisdd ihusdd hiusdd ushidd suhidd uhsidd husidd shuidd hsuidd ishudd sihudd ihsudd hisudd shiudd hsiudd ddishu ddishu didshu iddshu didshu iddshu ddsihu ddsihu dsdihu sddihu dsdihu sddihu disdhu idsdhu dsidhu sdidhu isddhu siddhu disdhu idsdhu dsidhu sdidhu isddhu siddhu ddihsu ddihsu didhsu iddhsu didhsu iddhsu ddhisu ddhisu dhdisu hddisu dhdisu hddisu dihdsu idhdsu dhidsu hdidsu ihddsu hiddsu dihdsu idhdsu dhidsu hdidsu ihddsu hiddsu ddshiu ddshiu dsdhiu sddhiu dsdhiu sddhiu ddhsiu ddhsiu dhdsiu hddsiu dhdsiu hddsiu dshdiu sdhdiu dhsdiu hdsdiu shddiu hsddiu dshdiu sdhdiu dhsdiu hdsdiu shddiu hsddiu dishdu idshdu dsihdu sdihdu isdhdu sidhdu dihsdu idhsdu dhisdu hdisdu ihdsdu hidsdu dshidu sdhidu dhsidu hdsidu shdidu hsdidu ishddu sihddu ihsddu hisddu shiddu hsiddu dishdu idshdu dsihdu sdihdu isdhdu sidhdu dihsdu idhsdu dhisdu hdisdu ihdsdu hidsdu dshidu sdhidu dhsidu hdsidu shdidu hsdidu ishddu sihddu ihsddu hisddu shiddu hsiddu udishd duishd uidshd iudshd diushd idushd udsihd dusihd usdihd sudihd dsuihd sduihd uisdhd iusdhd usidhd suidhd isudhd siudhd disuhd idsuhd dsiuhd sdiuhd isduhd siduhd udihsd duihsd uidhsd iudhsd diuhsd iduhsd udhisd duhisd uhdisd hudisd dhuisd hduisd uihdsd iuhdsd uhidsd huidsd ihudsd hiudsd dihusd idhusd dhiusd hdiusd ihdusd hidusd udshid dushid usdhid sudhid dsuhid sduhid udhsid duhsid uhdsid hudsid dhusid hdusid ushdid suhdid uhsdid husdid shudid hsudid dshuid sdhuid dhsuid hdsuid shduid hsduid uishdd iushdd usihdd suihdd isuhdd siuhdd uihsdd iuhsdd uhisdd huisdd ihusdd hiusdd ushidd suhidd uhsidd husidd shuidd hsuidd ishudd sihudd ihsudd hisudd shiudd hsiudd dishud idshud dsihud sdihud isdhud sidhud dihsud idhsud dhisud hdisud ihdsud hidsud dshiud sdhiud dhsiud hdsiud shdiud hsdiud ishdud sihdud ihsdud hisdud shidud hsidud
Note: these 'words' (valid or invalid) are all the permutations of the word dudish. These words are obtained by scrambling the letters in dudish.