bacha abcha bcaha cbaha acbha cabha bahca abhca bhaca hbaca ahbca habca bchaa cbhaa bhcaa hbcaa chbaa hcbaa achba cahba ahcba hacba chaba hcaba bacah abcah bcaah cbaah acbah cabah baach abach baach abach aabch aabch bcaah cbaah bacah abcah cabah acbah acabh caabh aacbh aacbh caabh acabh bahac abhac bhaac hbaac ahbac habac baahc abahc baahc abahc aabhc aabhc bhaac hbaac bahac abhac habac ahbac ahabc haabc aahbc aahbc haabc ahabc bchaa cbhaa bhcaa hbcaa chbaa hcbaa bcaha cbaha bacha abcha cabha acbha bhaca hbaca bahca abhca habca ahbca chaba hcaba cahba achba hacba ahcba achab cahab ahcab hacab chaab hcaab acahb caahb aachb aachb caahb acahb ahacb haacb aahcb aahcb haacb ahacb chaab hcaab cahab achab hacab ahcab
Note: these 'words' (valid or invalid) are all the permutations of the word bacha. These words are obtained by scrambling the letters in bacha.