0 + 0 = 0
0 + 1 = 1
0 + 2 = 2
1 + 0 = 1
1 + 1 = 2
1 + 2 = 3
2 + 0 = 2
2 + 1 = 3
2 + 2 = 4

##</code><code>##

 
0 + 2 = 2
1 + 1 = 2
2 + 0 = 2

##</code><code>##

0 + 1 = 1
0 + 2 = 2
1 + 2 = 3