Any cook can tell you, probably from first-hand experience, about the disastrous results of leaving out even one ingredient or adding too much of another in an otherwise well-cooked meal. Forget the yeast, and the
bread will not rise. Too much salt leaves the potatoes tasting, well, too salty.

The same holds true for offers of COBRA. You need to make sure you include all the ingredients.

The initial issue is when to preheat the oven. In other words, what triggers COBRA? Two ingredients are needed in order to offer COBRA:

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