tvirl vtirl tivrl itvrl vitrl ivtrl tvril vtril trvil rtvil vrtil rvtil tirvl itrvl trivl rtivl irtvl ritvl virtl ivrtl vritl rvitl irvtl rivtl tvilr vtilr tivlr itvlr vitlr ivtlr tvlir vtlir tlvir ltvir vltir lvtir tilvr itlvr tlivr ltivr iltvr litvr viltr ivltr vlitr lvitr ilvtr livtr tvrli vtrli trvli rtvli vrtli rvtli tvlri vtlri tlvri ltvri vltri lvtri trlvi rtlvi tlrvi ltrvi rltvi lrtvi vrlti rvlti vlrti lvrti rlvti lrvti tirlv itrlv trilv rtilv irtlv ritlv tilrv itlrv tlirv ltirv iltrv litrv trliv rtliv tlriv ltriv rltiv lrtiv irltv riltv ilrtv lirtv rlitv lritv virlt ivrlt vrilt rvilt irvlt rivlt vilrt ivlrt vlirt lvirt ilvrt livrt vrlit rvlit vlrit lvrit rlvit lrvit irlvt rilvt ilrvt lirvt rlivt lrivt
Note: these 'words' (valid or invalid) are all the permutations of the word tvirl. These words are obtained by scrambling the letters in tvirl.