cbyba bcyba cybba ycbba bycba ybcba cbbya bcbya cbbya bcbya bbcya bbcya cybba ycbba cbyba bcyba ybcba bycba bybca ybbca bbyca bbyca ybbca bybca cbyab bcyab cybab ycbab bycab ybcab cbayb bcayb cabyb acbyb bacyb abcyb cyabb ycabb caybb acybb yacbb aycbb byacb ybacb baycb abycb yabcb aybcb cbbay bcbay cbbay bcbay bbcay bbcay cbaby bcaby cabby acbby bacby abcby cbaby bcaby cabby acbby bacby abcby bbacy bbacy babcy abbcy babcy abbcy cybab ycbab cbyab bcyab ybcab bycab cyabb ycabb caybb acybb yacbb aycbb cbayb bcayb cabyb acbyb bacyb abcyb ybacb byacb yabcb aybcb baycb abycb bybac ybbac bbyac bbyac ybbac bybac byabc ybabc baybc abybc yabbc aybbc bbayc bbayc babyc abbyc babyc abbyc ybabc byabc yabbc aybbc baybc abybc
Note: these 'words' (valid or invalid) are all the permutations of the word cbyba. These words are obtained by scrambling the letters in cbyba.