Are possible cases like these in the rows 13, 14 and 15 (red)?

If so, what are the expected results?


A
B
C
D
1
Starting
9/18
Format
End
2
5
9
4
3
4
18
3
4
1
9
9
5
1
18
18
6
2
9
1
7
14
18
13
8
8
9
7
9
9
9
8
10
18
18
17
11
17
18
16
12
9
18
8
13
17
9
?
14
18
9
?
15
10
9
?