ruche urche rcuhe cruhe ucrhe curhe ruhce urhce rhuce hruce uhrce hurce rchue crhue rhcue hrcue chrue hcrue uchre cuhre uhcre hucre chure hcure ruceh urceh rcueh crueh ucreh cureh ruech urech reuch eruch uerch eurch rceuh creuh recuh ercuh ceruh ecruh ucerh cuerh uecrh eucrh ceurh ecurh ruhec urhec rhuec hruec uhrec hurec ruehc urehc reuhc eruhc uerhc eurhc rheuc hreuc rehuc erhuc heruc ehruc uherc huerc uehrc euhrc heurc ehurc rcheu crheu rhceu hrceu chreu hcreu rcehu crehu rechu erchu cerhu ecrhu rhecu hrecu rehcu erhcu hercu ehrcu cheru hceru cehru echru hecru ehcru ucher cuher uhcer hucer chuer hcuer ucehr cuehr uechr euchr ceuhr ecuhr uhecr huecr uehcr euhcr heucr ehucr cheur hceur cehur echur hecur ehcur
Note: these 'words' (valid or invalid) are all the permutations of the word ruche. These words are obtained by scrambling the letters in ruche.