MAJOR ERRORS (ANY ONE OF THE FOLLOWING):

1. Sentence fragment (frag): any group of words that do not constitute a complete thought
2. Comma splice (cs): two sentences joined by a comma but lacking a conjunction
3. Run-on sentence (run-on): two sentences fused together without any punctuation or conjunction
4. Garbled sentence (awk, gs): any sentence that for any reason does not make sense
5. Faulty subject-verb agreement (s-v): a sentence in which the subject and the verb do not agree in number or person

 
MINOR ERRORS (ANY THREE OF THE FOLLOWING EQUAL A MAJOR ERROR):

1. Misused verb form error (vb)                             
8. Pronoun-antecedent agreement error (agr)
2. Nonparallel element (non-11) 9. Error in capitalization
3. Misused or omitted comma 10. Error in pronoun case or reference (upr)
4. Misused or omitted semicolon 11. Inappropriate word choice or sentence structure
5. Dangling or misplaced modifier (mm)
12. Misspelled word (sp)
6. Misuse of adjective or adverb 13. Omission of word ending
7. Misused or omitted apostrophe