prows rpows porws oprws ropws orpws prwos rpwos pwros wpros rwpos wrpos powrs opwrs pwors wpors owprs woprs rowps orwps rwops wrops owrps worps prosw rposw porsw oprsw ropsw orpsw prsow rpsow psrow sprow rspow srpow posrw opsrw psorw sporw osprw soprw rospw orspw rsopw sropw osrpw sorpw prwso rpwso pwrso wprso rwpso wrpso prswo rpswo psrwo sprwo rspwo srpwo pwsro wpsro pswro spwro wspro swpro rwspo wrspo rswpo srwpo wsrpo swrpo powsr opwsr pwosr wposr owpsr wopsr poswr opswr psowr spowr ospwr sopwr pwsor wpsor pswor spwor wspor swpor owspr wospr oswpr sowpr wsopr swopr rowsp orwsp rwosp wrosp owrsp worsp roswp orswp rsowp srowp osrwp sorwp rwsop wrsop rswop srwop wsrop swrop owsrp wosrp oswrp sowrp wsorp sworp
Note: these 'words' (valid or invalid) are all the permutations of the word prows. These words are obtained by scrambling the letters in prows.