cardi acrdi cradi rcadi arcdi racdi cadri acdri cdari dcari adcri dacri crdai rcdai cdrai dcrai rdcai drcai ardci radci adrci darci rdaci draci carid acrid craid rcaid arcid racid caird acird ciard icard aicrd iacrd criad rciad cirad icrad ricad ircad aricd raicd aircd iarcd riacd iracd cadir acdir cdair dcair adcir dacir caidr acidr ciadr icadr aicdr iacdr cdiar dciar cidar icdar dicar idcar adicr daicr aidcr iadcr diacr idacr crdia rcdia cdria dcria rdcia drcia crida rcida cirda icrda ricda ircda cdira dcira cidra icdra dicra idcra rdica drica ridca irdca dirca idrca ardic radic adric daric rdaic draic aridc raidc airdc iardc riadc iradc adirc dairc aidrc iadrc diarc idarc rdiac driac ridac irdac dirac idrac
Note: these 'words' (valid or invalid) are all the permutations of the word cardi. These words are obtained by scrambling the letters in cardi.