chiao hciao cihao ichao hicao ihcao chaio hcaio cahio achio hacio ahcio ciaho icaho caiho aciho iacho aicho hiaco ihaco haico ahico iahco aihco chioa hcioa cihoa ichoa hicoa ihcoa choia hcoia cohia ochia hocia ohcia cioha icoha coiha ociha iocha oicha hioca ihoca hoica ohica iohca oihca chaoi hcaoi cahoi achoi hacoi ahcoi choai hcoai cohai ochai hocai ohcai caohi acohi coahi ocahi aochi oachi haoci ahoci hoaci ohaci aohci oahci ciaoh icaoh caioh acioh iacoh aicoh cioah icoah coiah ociah iocah oicah caoih acoih coaih ocaih aocih oacih iaoch aioch ioach oiach aoich oaich hiaoc ihaoc haioc ahioc iahoc aihoc hioac ihoac hoiac ohiac iohac oihac haoic ahoic hoaic ohaic aohic oahic iaohc aiohc ioahc oiahc aoihc oaihc
Note: these 'words' (valid or invalid) are all the permutations of the word chiao. These words are obtained by scrambling the letters in chiao.