Open Cell.jar and choose :

- Cell size ==> Medium
- Plane type ==> 8x1

Click InPat : https://imgur.com/l8DY78g

Put this in the program area : NW == 4 : 3
NE == 3 :4
SW == 1 : 2
SE == 2 : 1
C == 5 : C

Click step until Generation == 20 : https://imgur.com/eM9NfKP

If you can't see correctly, click outpat and then check outpattern.txt, replace the numbers for more visibility : https://imgur.com/4zerYBk

flag : nactf{ib_bio_ftw}