crwth rcwth cwrth wcrth rwcth wrcth crtwh rctwh ctrwh tcrwh rtcwh trcwh cwtrh wctrh ctwrh tcwrh wtcrh twcrh rwtch wrtch rtwch trwch wtrch twrch crwht rcwht cwrht wcrht rwcht wrcht crhwt rchwt chrwt hcrwt rhcwt hrcwt cwhrt wchrt chwrt hcwrt whcrt hwcrt rwhct wrhct rhwct hrwct whrct hwrct crthw rcthw ctrhw tcrhw rtchw trchw crhtw rchtw chrtw hcrtw rhctw hrctw cthrw tchrw chtrw hctrw thcrw htcrw rthcw trhcw rhtcw hrtcw thrcw htrcw cwthr wcthr ctwhr tcwhr wtchr twchr cwhtr wchtr chwtr hcwtr whctr hwctr cthwr tchwr chtwr hctwr thcwr htcwr wthcr twhcr whtcr hwtcr thwcr htwcr rwthc wrthc rtwhc trwhc wtrhc twrhc rwhtc wrhtc rhwtc hrwtc whrtc hwrtc rthwc trhwc rhtwc hrtwc thrwc htrwc wthrc twhrc whtrc hwtrc thwrc htwrc
Note: these 'words' (valid or invalid) are all the permutations of the word crwth. These words are obtained by scrambling the letters in crwth.