ulaks luaks ualks aulks lauks aluks ulkas lukas uklas kulas lkuas kluas uakls aukls ukals kuals akuls kauls lakus alkus lkaus klaus aklus kalus ulask luask ualsk aulsk lausk alusk ulsak lusak uslak sulak lsuak sluak uaslk auslk usalk sualk asulk saulk lasuk alsuk lsauk slauk asluk saluk ulksa luksa uklsa kulsa lkusa klusa ulska luska uslka sulka lsuka sluka uksla kusla uskla sukla ksula skula lksua klsua lskua slkua kslua sklua uaksl auksl ukasl kuasl akusl kausl uaskl auskl usakl suakl asukl saukl uksal kusal uskal sukal ksual skual aksul kasul askul sakul ksaul skaul laksu alksu lkasu klasu aklsu kalsu lasku alsku lsaku slaku aslku salku lksau klsau lskau slkau kslau sklau akslu kaslu asklu saklu ksalu skalu
Note: these 'words' (valid or invalid) are all the permutations of the word ulaks. These words are obtained by scrambling the letters in ulaks.