Problem set 8:
[1,2]
[3ab]
[3cd]
[4]
[5]
[6]
[7a]
[7b]
[7c,+]
Problem set 8:
[1,2]
[3ab]
[3cd]
[4]
[5]
[6]
[7a]
[7b]
[7c,+]