This was just awful. You need to check your work before submitting. This is just ridiculous. I hope this can help those who still bother to try and solve this. R16 C11, 15, 21, 23 R17 C11, 13, 15, 17, 21, 23 R18 C11, 13, 19, 21, 23, 25 R19 C13, 15, 17, 19 R20 C11, 23, 25.
I hope this can help those who still bother to try and solve this.
R16 C11, 15, 21, 23
R17 C11, 13, 15, 17, 21, 23
R18 C11, 13, 19, 21, 23, 25
R19 C13, 15, 17, 19
R20 C11, 23, 25.