rcyba cryba rycba yrcba cyrba ycrba rcbya crbya rbcya brcya cbrya bcrya rybca yrbca rbyca bryca ybrca byrca cybra ycbra cbyra bcyra ybcra bycra rcyab cryab rycab yrcab cyrab ycrab rcayb crayb racyb arcyb caryb acryb ryacb yracb raycb arycb yarcb ayrcb cyarb ycarb cayrb acyrb yacrb aycrb rcbay crbay rbcay brcay cbray bcray rcaby craby racby arcby carby acrby rbacy bracy rabcy arbcy barcy abrcy cbary bcary cabry acbry bacry abcry rybac yrbac rbyac bryac ybrac byrac ryabc yrabc raybc arybc yarbc ayrbc rbayc brayc rabyc arbyc baryc abryc ybarc byarc yabrc aybrc bayrc abyrc cybar ycbar cbyar bcyar ybcar bycar cyabr ycabr caybr acybr yacbr aycbr cbayr bcayr cabyr acbyr bacyr abcyr ybacr byacr yabcr aybcr baycr abycr
Note: these 'words' (valid or invalid) are all the permutations of the word rcyba. These words are obtained by scrambling the letters in rcyba.