Ranked by: number of candidates
1.
Comparative of superiority (76295 candidates)
2.
For / Since (75379 candidates)
3.
Comparative with Less (64239 candidates)
4.
Comparative with as ...as (58541 candidates)
5.
Interrogative pronouns/adjectives (10922 candidates)
6.
Suggestions (9482 candidates)
7.
Whatever, whoever, wherever, whenever, however (7654 candidates) 

8.
Open / Opened (6491 candidates)
9.
Very, very much, much (4445 candidates) 
10.
Expressions using comparatives and superlatives (4438 candidates) 
11.
Expressions with More (2759 candidates) 
12.
Sentences using Less (2365 candidates) 

