I just have a few cases that I hope you guys can quickly verify as to whether they are legal or not for climbing.
Here goes!
Case 1:
Case 2:
Case 3:
Case 4
Case 5:
Case 6:
http://i.imgur.com/T4Bin2b.png
Case 7:
http://i.imgur.com/N1wRP3H.png
Case 8:
http://i.imgur.com/2itwOmr.png
Case 9:
http://i.imgur.com/3nAJQPu.png
So here, you either grapple above the horizontal bar and let it fall, or have a stronger grapple to hold onto the corner bar in place without it falling down.
Sorry for only the first 5 images being displayed, but there is a limit so click on the links for the last ones.