12 ways to 11

Question

Eve Merriam entitled her children's book, "12 ways to Get to 11". 

using only addition and natural numbers, describe 12 ways that one can

arrive at the sum 11.

Answer 1

0+11

1+10

2+9

3+8

4+7

5+6

6+5

Etc.

One can argue there are only 6 because of the commutative property