images.pbm: use not.
images.pbm: use not.

factor/factor,mrjbq7/factor,bpollack/factor,mrjbq7/factor,tgunr/factor,tgunr/factor,bpollack/factor,tgunr/factor,bpollack/factor,factor/factor,factor/factor,factor/factor,bpollack/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,bpollack/factor,mrjbq7/factor,mrjbq7/factor,factor/factor,bpollack/factor,tgunr/factor,bpollack/factor,factor/factor