yacca aycca ycaca cyaca acyca cayca yacca aycca ycaca cyaca acyca cayca yccaa cycaa yccaa cycaa ccyaa ccyaa accya cacya accya cacya ccaya ccaya yacac aycac ycaac cyaac acyac cayac yaacc ayacc yaacc ayacc aaycc aaycc ycaac cyaac yacac aycac cayac acyac acayc caayc aacyc aacyc caayc acayc yacac aycac ycaac cyaac acyac cayac yaacc ayacc yaacc ayacc aaycc aaycc ycaac cyaac yacac aycac cayac acyac acayc caayc aacyc aacyc caayc acayc yccaa cycaa yccaa cycaa ccyaa ccyaa ycaca cyaca yacca aycca cayca acyca ycaca cyaca yacca aycca cayca acyca ccaya ccaya cacya accya cacya accya accay cacay accay cacay ccaay ccaay acacy caacy aaccy aaccy caacy acacy acacy caacy aaccy aaccy caacy acacy ccaay ccaay cacay accay cacay accay
Note: these 'words' (valid or invalid) are all the permutations of the word yacca. These words are obtained by scrambling the letters in yacca.