kacha akcha kcaha ckaha ackha cakha kahca akhca khaca hkaca ahkca hakca kchaa ckhaa khcaa hkcaa chkaa hckaa achka cahka ahcka hacka chaka hcaka kacah akcah kcaah ckaah ackah cakah kaach akach kaach akach aakch aakch kcaah ckaah kacah akcah cakah ackah acakh caakh aackh aackh caakh acakh kahac akhac khaac hkaac ahkac hakac kaahc akahc kaahc akahc aakhc aakhc khaac hkaac kahac akhac hakac ahkac ahakc haakc aahkc aahkc haakc ahakc kchaa ckhaa khcaa hkcaa chkaa hckaa kcaha ckaha kacha akcha cakha ackha khaca hkaca kahca akhca hakca ahkca chaka hcaka cahka achka hacka ahcka achak cahak ahcak hacak chaak hcaak acahk caahk aachk aachk caahk acahk ahack haack aahck aahck haack ahack chaak hcaak cahak achak hacak ahcak
Note: these 'words' (valid or invalid) are all the permutations of the word kacha. These words are obtained by scrambling the letters in kacha.