...wife and I...I had all but 7 from first pass...then the next 6 with wifes help...they Y had me for a while...and the F was the last to go.
Issue was...they were obvious...especially the Y and N that I didn't get in the first pass...that I spent much time kicking myself for not getting it the first pass.
If you push something hard enough, it will fall over. Fudd's First Law of Opposition