 Okay, so this one says identify which of the following pairs of compounds represent ketoenol toddlers. Can you help me out with this one? A? Is that correct? A? So yeah, so where does the double bond have to be relative to the O if you're in an enol? Yeah, so it has the alcohol has to be a vinyl alcohol. That's what an enol is, right? A vinyl alcohol where the double bond is where the OH is. So the OH is connected to the double bond. Is that the case here? The OH connected to the double bond? So are these ketoenol toddlers? No, okay, this isn't an enol. So what about these ones? So is this an enol here? Uh huh, right? How come? Because the double bond is connected to the OH. It's a vinyl OH, right? And then is this the keto form of that enol? Yep, so that one is. So we'll do this. So you guys can learn how to spell that word. Toddlers, okay? No. Okay, what about these two? Yeah, they are, right? They're trying to trick you because they turned this one a little bit, right? They turned it like 120 degrees or whatever. But do you see the OH is connected to that double bond, which is that O is what the OH turned into, that carbonyl group, okay? So these are, and what about this one? Is this hydroxyl group vinyl? Right? Is that ketone in the same place? Yep, those are tonamers. So just the first one wasn't, the other three weren't. Any questions on this one? Questions on this one yet? We good? Question.