haith ahith hiath ihath aihth iahth hatih ahtih htaih thaih athih tahih hitah ihtah htiah thiah ithah tihah aithh iathh atihh taihh itahh tiahh haiht ahiht hiaht ihaht aihht iahht hahit ahhit hhait hhait ahhit hahit hihat ihhat hhiat hhiat ihhat hihat aihht iahht ahiht haiht ihaht hiaht hathi ahthi htahi thahi athhi tahhi hahti ahhti hhati hhati ahhti hahti hthai thhai hhtai hhtai thhai hthai athhi tahhi ahthi hathi thahi htahi hitha ihtha htiha thiha ithha tihha hihta ihhta hhita hhita ihhta hihta hthia thhia hhtia hhtia thhia hthia ithha tihha ihtha hitha thiha htiha aithh iathh atihh taihh itahh tiahh aihth iahth ahith haith ihath hiath athih tahih ahtih hatih thaih htaih ithah tihah ihtah hitah thiah htiah
Note: these 'words' (valid or invalid) are all the permutations of the word haith. These words are obtained by scrambling the letters in haith.