irtci ritci itrci tirci rtici trici ircti ricti icrti cirti rciti criti itcri ticri ictri citri tciri ctiri rtcii trcii rctii crtii tcrii ctrii irtic ritic itric tiric rtiic triic iritc riitc iirtc iirtc riitc iritc itirc tiirc iitrc iitrc tiirc itirc rtiic triic ritic irtic tiric itric ircit ricit icrit cirit rciit criit irict riict iirct iirct riict irict icirt ciirt iicrt iicrt ciirt icirt rciit criit ricit ircit cirit icrit itcir ticir ictir citir tciir ctiir iticr tiicr iitcr iitcr tiicr iticr icitr ciitr iictr iictr ciitr icitr tciir ctiir ticir itcir citir ictir rtcii trcii rctii crtii tcrii ctrii rtici trici ritci irtci tirci itrci rciti criti ricti ircti cirti icrti tciri ctiri ticri itcri citri ictri
Note: these 'words' (valid or invalid) are all the permutations of the word irtci. These words are obtained by scrambling the letters in irtci.