rinds irnds rnids nrids inrds nirds ridns irdns rdins drins idrns dirns rndis nrdis rdnis drnis ndris dnris indrs nidrs idnrs dinrs ndirs dnirs rinsd irnsd rnisd nrisd inrsd nirsd risnd irsnd rsind srind isrnd sirnd rnsid nrsid rsnid srnid nsrid snrid insrd nisrd isnrd sinrd nsird snird ridsn irdsn rdisn drisn idrsn dirsn risdn irsdn rsidn sridn isrdn sirdn rdsin drsin rsdin srdin dsrin sdrin idsrn disrn isdrn sidrn dsirn sdirn rndsi nrdsi rdnsi drnsi ndrsi dnrsi rnsdi nrsdi rsndi srndi nsrdi snrdi rdsni drsni rsdni srdni dsrni sdrni ndsri dnsri nsdri sndri dsnri sdnri indsr nidsr idnsr dinsr ndisr dnisr insdr nisdr isndr sindr nsidr snidr idsnr disnr isdnr sidnr dsinr sdinr ndsir dnsir nsdir sndir dsnir sdnir
Note: these 'words' (valid or invalid) are all the permutations of the word rinds. These words are obtained by scrambling the letters in rinds.