tocks otcks tcoks ctoks octks cotks tokcs otkcs tkocs ktocs oktcs kotcs tckos ctkos tkcos ktcos cktos kctos ockts cokts okcts kocts ckots kcots tocsk otcsk tcosk ctosk octsk cotsk tosck otsck tsock stock ostck sotck tcsok ctsok tscok stcok cstok sctok ocstk costk osctk soctk csotk scotk toksc otksc tkosc ktosc oktsc kotsc toskc otskc tsokc stokc ostkc sotkc tksoc ktsoc tskoc stkoc kstoc sktoc okstc kostc osktc soktc ksotc skotc tckso ctkso tkcso ktcso cktso kctso tcsko ctsko tscko stcko cstko sctko tksco ktsco tskco stkco kstco sktco cksto kcsto cskto sckto kscto skcto ockst cokst okcst kocst ckost kcost ocskt coskt osckt sockt csokt scokt oksct kosct oskct sokct ksoct skoct cksot kcsot cskot sckot kscot skcot
Note: these 'words' (valid or invalid) are all the permutations of the word tocks. These words are obtained by scrambling the letters in tocks.