quops uqops qoups oqups uoqps ouqps qupos uqpos qpuos pquos upqos puqos qopus oqpus qpous pqous opqus poqus uopqs oupqs upoqs puoqs opuqs pouqs quosp uqosp qousp oqusp uoqsp ouqsp qusop uqsop qsuop squop usqop suqop qosup oqsup qsoup sqoup osqup soqup uosqp ousqp usoqp suoqp osuqp souqp qupso uqpso qpuso pquso upqso puqso quspo uqspo qsupo squpo usqpo suqpo qpsuo pqsuo qspuo sqpuo psquo spquo upsqo pusqo uspqo supqo psuqo spuqo qopsu oqpsu qposu pqosu opqsu poqsu qospu oqspu qsopu sqopu osqpu soqpu qpsou pqsou qspou sqpou psqou spqou opsqu posqu ospqu sopqu psoqu spoqu uopsq oupsq uposq puosq opusq pousq uospq ouspq usopq suopq osupq soupq upsoq pusoq uspoq supoq psuoq spuoq opsuq posuq ospuq sopuq psouq spouq
Note: these 'words' (valid or invalid) are all the permutations of the word quops. These words are obtained by scrambling the letters in quops.