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