has anyone tied one of these. i was looking through this piece of paper they have at my fly shop for the good hatches to have in your fly box and its has blue dun emerger and the struggling dun. i have pictures listed below. i cant call the shop as its closed today and i wont be able to call while there open for like 5 more days want to kind of know what to order some stuff is cheaper to buy elsewhere.

pics are below. first is blue dun emeger second is struggling dun .