1. in (used to indicate space, also see usage notes)

2. to (indicates direction towards certain very large locations, see usage notes)

3. by (used to indicate means)

4. as

5. at (used to describe an ability)

6. of, made of (used to describe composition)

7. in (during the following time (used for months and years))

8. while (followed by a gerund)

9. by, in (describing a way of getting something) (followed by a gerund)

10. in (used to describe color)

11. in (used to describe feelings)

12. in (as part of something)