1
+
28
=
13
+
18
=
90
+
2
=
4
+
1
=
20
+
9
=
43
+
37
=
55
+
10
=
64
+
13
=
32
+
4
=
4
+
4
=
19
+
19
=
16
+
33
=
4
+
0
=
12
+
16
=
1
+
3
=
8
+
53
=
51
+
7
=
29
+
67
=
1
+
1
=
50
+
11
=