8  ^^^^
 9  vvvv  DL on line 11, expected:  ACD_
10  A
12  C
13  D

14  ^^^^
15  vvvv  IL on line 17, expected:  A_
16  A

18  ^^^^
19  vvvv  IL on line 21, expected:  A_
20  A

22  ^^^^

23  vvvv  IL on line 24, expected:  _A
25  B
26  ^^^^
28  A

29  B
30  ^^^^
31
32