E = essential/restrictive (is NOT separated from the noun with commas, dashes,or parentheses)
N = nonessential/non-restrictive (IS separated from the noun with commas, dashes,or parentheses)
1a. relative pronoun = SUBJECT of the adjective clause:
1b. ADJECTIVE PHRASE (reduced from a clause like 1a):
(Did you find any of these? Probably not. See the questions below for suggestions.)
1c. ADJECTIVE PHRASE moved BEFORE the subject (nonessential only)
(reduced from a clause like 1a):
(you also probably didn't find any of these. See the suggestions below.)
2a. relative pronoun = OBJECT in the adjective clause:
2b. relative pronoun OMITTED (essential only)
(from a clause in which the relative pronoun is NOT the SUBJECT)
(Did you find any of these? See below)
3. PREPOSITION + relative pronoun:
4. WHERE/WHEN/WHY as relative pronoun:
5. Q/N + of + relative pronoun (nonessential only):
6. Clauses beginning with which that modify an entire proposition:
(non-essential)