YOU SAID:

long words are hard to spell because they have many letters

INTO JAPANESE

長い言葉は多くの文字を持っているので綴りにくい

BACK INTO ENGLISH

Long words are hard to spell as they have many characters

INTO JAPANESE

長い言葉は多くの文字があるのでつづりにくい

BACK INTO ENGLISH

Long words are hard to spell as there are many characters

INTO JAPANESE

長い単語は多くの文字があるのでつづりにくいです

BACK INTO ENGLISH

Long words are hard to spell as there are many characters