brits rbits birts ibrts ribts irbts brtis rbtis btris tbris rtbis trbis bitrs ibtrs btirs tbirs itbrs tibrs ritbs irtbs rtibs tribs itrbs tirbs brist rbist birst ibrst ribst irbst brsit rbsit bsrit sbrit rsbit srbit bisrt ibsrt bsirt sbirt isbrt sibrt risbt irsbt rsibt sribt isrbt sirbt brtsi rbtsi btrsi tbrsi rtbsi trbsi brsti rbsti bsrti sbrti rsbti srbti btsri tbsri bstri sbtri tsbri stbri rtsbi trsbi rstbi srtbi tsrbi strbi bitsr ibtsr btisr tbisr itbsr tibsr bistr ibstr bsitr sbitr isbtr sibtr btsir tbsir bstir sbtir tsbir stbir itsbr tisbr istbr sitbr tsibr stibr ritsb irtsb rtisb trisb itrsb tirsb ristb irstb rsitb sritb isrtb sirtb rtsib trsib rstib srtib tsrib strib itsrb tisrb istrb sitrb tsirb stirb
Note: these 'words' (valid or invalid) are all the permutations of the word brits. These words are obtained by scrambling the letters in brits.