idahs diahs iadhs aidhs daihs adihs idhas dihas ihdas hidas dhias hdias iahds aihds ihads hiads ahids haids dahis adhis dhais hdais ahdis hadis idash diash iadsh aidsh daish adish idsah disah isdah sidah dsiah sdiah iasdh aisdh isadh siadh asidh saidh dasih adsih dsaih sdaih asdih sadih idhsa dihsa ihdsa hidsa dhisa hdisa idsha disha isdha sidha dsiha sdiha ihsda hisda ishda sihda hsida shida dhsia hdsia dshia sdhia hsdia shdia iahsd aihsd ihasd hiasd ahisd haisd iashd aishd isahd siahd asihd saihd ihsad hisad ishad sihad hsiad shiad ahsid hasid ashid sahid hsaid shaid dahsi adhsi dhasi hdasi ahdsi hadsi dashi adshi dsahi sdahi asdhi sadhi dhsai hdsai dshai sdhai hsdai shdai ahsdi hasdi ashdi sahdi hsadi shadi
Note: these 'words' (valid or invalid) are all the permutations of the word idahs. These words are obtained by scrambling the letters in idahs.