色

1.Particle--wrong, missing or unnecessary particle

2. Verb form-- the verb is correct, but there is either an error in the form or the wrong form is used.

3. Kanji error--missing a necessary kanji or the wrong kanji has been chosen. This could be due to a typing mistake.

4. Kana error--missing or unnecessary small つ, error in long/short vowel, hiragana in place of katakana (or opposite), or other kana misspelling.

5. Grammar-- word order or incorrect sentence structure

6.Vocabulary--incorrect word, or there is a better word available that your should know.

7. ぜんぜんわからない！