quells uqells qeulls equlls ueqlls euqlls qulels uqlels qluels lquels ulqels luqels qeluls eqluls qleuls lqeuls elquls lequls uelqls eulqls uleqls lueqls eluqls leuqls quells uqells qeulls equlls ueqlls euqlls qulels uqlels qluels lquels ulqels luqels qeluls eqluls qleuls lqeuls elquls lequls uelqls eulqls uleqls lueqls eluqls leuqls qulles uqlles qlules lqules ulqles luqles qulles uqlles qlules lqules ulqles luqles qllues lqlues qllues lqlues llques llques ullqes lulqes ullqes lulqes lluqes lluqes qellus eqllus qlelus lqelus elqlus leqlus qellus eqllus qlelus lqelus elqlus leqlus qlleus lqleus qlleus lqleus llqeus llqeus ellqus lelqus ellqus lelqus llequs llequs uellqs eullqs ulelqs luelqs elulqs leulqs uellqs eullqs ulelqs luelqs elulqs leulqs ulleqs luleqs ulleqs luleqs llueqs llueqs elluqs leluqs elluqs leluqs lleuqs lleuqs quelsl uqelsl qeulsl equlsl ueqlsl euqlsl qulesl uqlesl qluesl lquesl ulqesl luqesl qelusl eqlusl qleusl lqeusl elqusl lequsl uelqsl eulqsl uleqsl lueqsl eluqsl leuqsl quesll uqesll qeusll equsll ueqsll euqsll qusell uqsell qsuell squell usqell suqell qesull eqsull qseull sqeull esqull sequll uesqll eusqll useqll sueqll esuqll seuqll qulsel uqlsel qlusel lqusel ulqsel luqsel quslel uqslel qsulel squlel usqlel suqlel qlsuel lqsuel qsluel sqluel lsquel slquel ulsqel lusqel uslqel sulqel lsuqel sluqel qelsul eqlsul qlesul lqesul elqsul leqsul qeslul eqslul qselul sqelul esqlul seqlul qlseul lqseul qsleul sqleul lsqeul slqeul elsqul lesqul eslqul selqul lsequl slequl uelsql eulsql ulesql luesql elusql leusql ueslql euslql uselql suelql esulql seulql ulseql luseql usleql suleql lsueql slueql elsuql lesuql esluql seluql lseuql sleuql quelsl uqelsl qeulsl equlsl ueqlsl euqlsl qulesl uqlesl qluesl lquesl ulqesl luqesl qelusl eqlusl qleusl lqeusl elqusl lequsl uelqsl eulqsl uleqsl lueqsl eluqsl leuqsl quesll uqesll qeusll equsll ueqsll euqsll qusell uqsell qsuell squell usqell suqell qesull eqsull qseull sqeull esqull sequll uesqll eusqll useqll sueqll esuqll seuqll qulsel uqlsel qlusel lqusel ulqsel luqsel quslel uqslel qsulel squlel usqlel suqlel qlsuel lqsuel qsluel sqluel lsquel slquel ulsqel lusqel uslqel sulqel lsuqel sluqel qelsul eqlsul qlesul lqesul elqsul leqsul qeslul eqslul qselul sqelul esqlul seqlul qlseul lqseul qsleul sqleul lsqeul slqeul elsqul lesqul eslqul selqul lsequl slequl uelsql eulsql ulesql luesql elusql leusql ueslql euslql uselql suelql esulql seulql ulseql luseql usleql suleql lsueql slueql elsuql lesuql esluql seluql lseuql sleuql qullse uqllse qlulse lqulse ulqlse luqlse qullse uqllse qlulse lqulse ulqlse luqlse qlluse lqluse qlluse lqluse llquse llquse ullqse lulqse ullqse lulqse lluqse lluqse qulsle uqlsle qlusle lqusle ulqsle luqsle quslle uqslle qsulle squlle usqlle suqlle qlsule lqsule qslule sqlule lsqule slqule ulsqle lusqle uslqle sulqle lsuqle sluqle qulsle uqlsle qlusle lqusle ulqsle luqsle quslle uqslle qsulle squlle usqlle suqlle qlsule lqsule qslule sqlule lsqule slqule ulsqle lusqle uslqle sulqle lsuqle sluqle qllsue lqlsue qllsue lqlsue llqsue llqsue qlslue lqslue qsllue sqllue lsqlue slqlue qlslue lqslue qsllue sqllue lsqlue slqlue llsque llsque lslque sllque lslque sllque ullsqe lulsqe ullsqe lulsqe llusqe llusqe ulslqe luslqe usllqe sullqe lsulqe slulqe ulslqe luslqe usllqe sullqe lsulqe slulqe llsuqe llsuqe lsluqe slluqe lsluqe slluqe qellsu eqllsu qlelsu lqelsu elqlsu leqlsu qellsu eqllsu qlelsu lqelsu elqlsu leqlsu qllesu lqlesu qllesu lqlesu llqesu llqesu ellqsu lelqsu ellqsu lelqsu lleqsu lleqsu qelslu eqlslu qleslu lqeslu elqslu leqslu qesllu eqsllu qsellu sqellu esqllu seqllu qlselu lqselu qslelu sqlelu lsqelu slqelu elsqlu lesqlu eslqlu selqlu lseqlu sleqlu qelslu eqlslu qleslu lqeslu elqslu leqslu qesllu eqsllu qsellu sqellu esqllu seqllu qlselu lqselu qslelu sqlelu lsqelu slqelu elsqlu lesqlu eslqlu selqlu lseqlu sleqlu qllseu lqlseu qllseu lqlseu llqseu llqseu qlsleu lqsleu qslleu sqlleu lsqleu slqleu qlsleu lqsleu qslleu sqlleu lsqleu slqleu llsqeu llsqeu lslqeu sllqeu lslqeu sllqeu ellsqu lelsqu ellsqu lelsqu llesqu llesqu elslqu leslqu esllqu sellqu lselqu slelqu elslqu leslqu esllqu sellqu lselqu slelqu llsequ llsequ lslequ sllequ lslequ sllequ uellsq eullsq ulelsq luelsq elulsq leulsq uellsq eullsq ulelsq luelsq elulsq leulsq ullesq lulesq ullesq lulesq lluesq lluesq ellusq lelusq ellusq lelusq lleusq lleusq uelslq eulslq uleslq lueslq eluslq leuslq uesllq eusllq usellq suellq esullq seullq ulselq luselq uslelq sulelq lsuelq sluelq elsulq lesulq eslulq selulq lseulq sleulq uelslq eulslq uleslq lueslq eluslq leuslq uesllq eusllq usellq suellq esullq seullq ulselq luselq uslelq sulelq lsuelq sluelq elsulq lesulq eslulq selulq lseulq sleulq ullseq lulseq ullseq lulseq lluseq lluseq ulsleq lusleq uslleq sulleq lsuleq sluleq ulsleq lusleq uslleq sulleq lsuleq sluleq llsueq llsueq lslueq sllueq lslueq sllueq ellsuq lelsuq ellsuq lelsuq llesuq llesuq elsluq lesluq eslluq selluq lseluq sleluq elsluq lesluq eslluq selluq lseluq sleluq llseuq llseuq lsleuq slleuq lsleuq slleuq
Note: these 'words' (valid or invalid) are all the permutations of the word quells. These words are obtained by scrambling the letters in quells.