Adding 4 numbers find the missing numbers

4  +   1  +   5  +   _________ = 19

2  +   1  +   3  +   _________ = 15

1  +   0  +   3  +   _________ = 20

3  +   1  +   4  +   _________ = 10

1  +   2  +   3  +   _________ = 14

5  +   4  +   0  +   _________ = 18

2  +   1  +   0  +   _________ = 11

4  +   1  +   2  +   _________ = 17

4  +   2  +   2  +   _________ = 19

8  +   1  +   3  +   _________ = 16

2  +   0  +   4  +   _________ = 20