krais rkais karis akris rakis arkis krias rkias kiras ikras rikas irkas kairs akirs kiars ikars aikrs iakrs raiks ariks riaks iraks airks iarks krasi rkasi karsi akrsi raksi arksi krsai rksai ksrai skrai rskai srkai kasri aksri ksari skari askri sakri raski arski rsaki sraki asrki sarki krisa rkisa kirsa ikrsa riksa irksa krsia rksia ksria skria rskia srkia kisra iksra ksira skira iskra sikra riska irska rsika srika isrka sirka kaisr akisr kiasr ikasr aiksr iaksr kasir aksir ksair skair askir sakir kisar iksar ksiar skiar iskar sikar aiskr iaskr asikr saikr isakr siakr raisk arisk riask irask airsk iarsk rasik arsik rsaik sraik asrik sarik risak irsak rsiak sriak israk sirak aisrk iasrk asirk sairk isark siark
Note: these 'words' (valid or invalid) are all the permutations of the word krais. These words are obtained by scrambling the letters in krais.