Menahot 80: 40 Loaves and Replacement Sacrifices

What if something happens to the animal designated for the thanksgiving sacrifice? The animal part of the sacrifice is the more significant part, where the loaves are ancillary to the offering. To the extent that even if the loaves were specifically designated, the loss is not considered too problematic. What if the loaves were designated first? Plus, back-up animals for the thanksgiving animals, and the question whether the back-ups requires the loaves to begin with. Also, should the surviving animals after a replacement is used or not used be offered on the altar or not? A mnemonic is used to make sense of challenges in the discussion.