YOU SAID:

The frog frogged until he frogged his last frog

INTO JAPANESE

カエルは最後のカエルを蛙にするまで蛙になった

BACK INTO ENGLISH

the frog became a frog until the last frog became a frog

INTO JAPANESE

最後のカエルがカエルになるまで、カエルはカエルになった

BACK INTO ENGLISH

The frog became a frog until the last frog became a frog

INTO JAPANESE

最後のカエルがカエルになるまで、カエルはカエルになった

BACK INTO ENGLISH

The frog became a frog until the last frog became a frog