reaks eraks raeks areks earks aerks rekas erkas rkeas kreas ekras keras rakes arkes rkaes kraes akres kares eakrs aekrs ekars kears akers kaers reask erask raesk aresk earsk aersk resak ersak rseak sreak esrak serak rasek arsek rsaek sraek asrek sarek easrk aesrk esark seark aserk saerk reksa erksa rkesa kresa ekrsa kersa reska erska rseka sreka esrka serka rksea krsea rskea srkea ksrea skrea eksra kesra eskra sekra ksera skera rakse arkse rkase krase akrse karse raske arske rsake srake asrke sarke rksae krsae rskae srkae ksrae skrae aksre kasre askre sakre ksare skare eaksr aeksr ekasr keasr akesr kaesr easkr aeskr esakr seakr asekr saekr eksar kesar eskar sekar ksear skear akser kaser asker saker ksaer skaer
Note: these 'words' (valid or invalid) are all the permutations of the word reaks. These words are obtained by scrambling the letters in reaks.