drink rdink dirnk idrnk ridnk irdnk drnik rdnik dnrik ndrik rndik nrdik dinrk idnrk dnirk ndirk indrk nidrk rindk irndk rnidk nridk inrdk nirdk drikn rdikn dirkn idrkn ridkn irdkn drkin rdkin dkrin kdrin rkdin krdin dikrn idkrn dkirn kdirn ikdrn kidrn rikdn irkdn rkidn kridn ikrdn kirdn drnki rdnki dnrki ndrki rndki nrdki drkni rdkni dkrni kdrni rkdni krdni dnkri ndkri dknri kdnri nkdri kndri rnkdi nrkdi rkndi krndi nkrdi knrdi dinkr idnkr dnikr ndikr indkr nidkr diknr idknr dkinr kdinr ikdnr kidnr dnkir ndkir dknir kdnir nkdir kndir inkdr nikdr ikndr kindr nkidr knidr rinkd irnkd rnikd nrikd inrkd nirkd riknd irknd rkind krind ikrnd kirnd rnkid nrkid rknid krnid nkrid knrid inkrd nikrd iknrd kinrd nkird knird
Note: these 'words' (valid or invalid) are all the permutations of the word drink. These words are obtained by scrambling the letters in drink.