Each of the following words can be changed into new ones according to a certain pattern. Can you determine the pattern and the new words?

1. TOLL
2. LITHE
3. LIMB
4. OUR
5. LATE
6. LOWER
7. OWN
8. OVER
9. SLANDER
10. ADE
11. NOW
12. AND
13. OTHER
14. EARLY
15. PEN
16. LEASE

Answers:

Each word can be preceded by a single letter, A - P, in alphabetical order:

1. ATOLL
2. BLITHE
3. CLIMB
4. DOUR
5. ELATE
6. FLOWER
7. GOWN
8. HOVER
9. ISLANDER
10. JADE
11. KNOW
12. LAND
13. MOTHER
14. NEARLY
15. OPEN
16. PLEASE