liasb ilasb laisb alisb ialsb ailsb lisab ilsab lsiab sliab islab silab lasib alsib lsaib slaib aslib salib iaslb aislb isalb sialb asilb sailb liabs ilabs laibs alibs ialbs ailbs libas ilbas lbias blias iblas bilas labis albis lbais blais ablis balis iabls aibls ibals bials abils bails lisba ilsba lsiba sliba islba silba libsa ilbsa lbisa blisa iblsa bilsa lsbia slbia lbsia blsia sblia bslia isbla sibla ibsla bisla sbila bsila lasbi alsbi lsabi slabi aslbi salbi labsi albsi lbasi blasi ablsi balsi lsbai slbai lbsai blsai sblai bslai asbli sabli absli basli sbali bsali iasbl aisbl isabl siabl asibl saibl iabsl aibsl ibasl biasl abisl baisl isbal sibal ibsal bisal sbial bsial asbil sabil absil basil sbail bsail
Note: these 'words' (valid or invalid) are all the permutations of the word liasb. These words are obtained by scrambling the letters in liasb.