resow ersow rseow sreow esrow serow reosw erosw roesw oresw eorsw oersw rsoew sroew rosew orsew sorew osrew esorw seorw eosrw oesrw soerw oserw reswo erswo rsewo srewo esrwo serwo rewso erwso rweso wreso ewrso werso rsweo srweo rwseo wrseo swreo wsreo eswro sewro ewsro wesro swero wsero reows erows roews orews eorws oerws rewos erwos rweos wreos ewros weros rowes orwes rwoes wroes owres wores eowrs oewrs ewors weors owers woers rsowe srowe roswe orswe sorwe osrwe rswoe srwoe rwsoe wrsoe swroe wsroe rowse orwse rwose wrose owrse worse sowre oswre swore wsore owsre wosre esowr seowr eoswr oeswr soewr osewr eswor sewor ewsor wesor sweor wseor eowsr oewsr ewosr weosr owesr woesr sower oswer swoer wsoer owser woser
Note: these 'words' (valid or invalid) are all the permutations of the word resow. These words are obtained by scrambling the letters in resow.