a: 6
b:

Halloween, New England Quilt Supply
 
Bx-6364-38, Spooktacular
Bx-6364-38
Bx-6386-33, Spooktacular
Bx-6386-33
Bx-6702-33, Spooktacular
Bx-6702-33
Bx-8398M-11
Bx-8398M-11