YOU SAID:

Japanese words are sure whacky

INTO JAPANESE

日本語の言葉は間違いない

BACK INTO ENGLISH

There is no doubt about the Japanese language

INTO JAPANESE

日本語は間違いありません

BACK INTO ENGLISH

Japanese is no mistake

INTO JAPANESE

日本人は間違いなし

BACK INTO ENGLISH

The Japanese are no doubt

INTO JAPANESE

日本人は間違いない

BACK INTO ENGLISH

The Japanese are no doubt