Articles	Nouns	Adjectives	Pronouns	Verbs	Prepositions	Conjunctions	Idioms/Usage
1. wrong definite article el, la, los, las	9. gender error	17. gender agreement	25. subject pronoun problem	33. subject – verb agreement wrong person	41. missing preposition	49. use of que wrong or missing	57. word for word translation
2. missing definite article el, la, los, las	10. improper insertion of English word	18. number agreement	26. D.O. pronoun wrong or missing	34. ar, er, ir wrong ending conjugation error	42. extra preposition	50. use of conjunction requiring the subjunctive	58. accents wrong or missing
3. wrong indefinite article un, una, unos, unas	11. dictionary error based on wrong part of speech	19. irregular adjectives	27. I.O. pronoun wrong or missing	35. preterite vs. imperfect error	43. incorrect preposition	51. relative pronoun use wrong or missing lo que etc.	59. spelling
4. missing indefinite article un, una, unos, unas	12. dictionary error based on homonym	20. unequal comparison mas que/ de menos que/ de	28. incorrect use of double pronouns	36. improper tense chosen	44. por/ para confusion	52. other conjunction wrong or missing	60. word order
5. contraction a + el = al needed	13. incorrect spelling	21. equal comparison tan , tanto	29. reflexive pronoun incorrect or missing	37. Compound const. needs infinitive or participle= ing	45. wrong or missing prep. in compound constructions	53. conjunction + infinitive (después de, antes de)	61. use dictionary carefully, wrong word choice
6. contraction de + el = del needed	14. false cognate	22. past participle used as adjective	30. incorrect demonstrative pronoun use	38. subjunctive needed	46. don’t end sentence w/ preposition	54. Interrogatives wrong or missing, missing accent	62. rephrase
Negation	Accents	23. demonstrative adjective wrong or missing	Le gusta	39. confusion of 2 verbs: ser vs. estar saber/ conocer pedir/ preguntar	47. avoid direct translation of in	Adverbs	63. avoid over use of passive tense
7. placement of no	15. wrong		31. incorrect construction			55. incorrect use of Adverb
8. incorrect use of negative words	16. missing	24. possessive adjective wrong or missing	32. incorrect pronoun (clarifier)	40. spelling change or stem change wrong or missing	48. personal “a “ wrong or missing	56. check adverb of location	64. develop, justify