Lately, however, he's added the 1 and the 4 to the mix, and started lining them up vertically (flat -- not stacked) on the couch. He's been lining stuff up, usually horizontally on the floor or the fridge (letter magnets) for a while now, but this number thing is interesting because he's reliably getting 1-4 in the right order.
He also clearly knows the entire alphabet at this point, and seems to know it in order. He won't rattle it all off on his own, but will fill in gaps, and recognizes everything reliably, as long as it's printed (not cursive) and it's not a really odd font (with the usual confusion between i and l in lowercase in some fonts). And he can read the numbers 1-20 reliably as well.
This makes reading alphabet and counting board books a lot more fun. He reads the letter or number, we read the rest of it, everyone gets to participate. With stuff like _It Looked Like Spilt Milk_, he knows almost all of the nouns, altho he still keeps saying butterfly for the angel picture. And he's well on his way to memorizing most of _Opposites_ by Sandra Boynton.
His speech is finally getting clearer, too. He says moon with the m, the o's and the n, now. Initially it was just the o's, then moo. So we're getting at least some terminal consonants, which is big progress.
Fun stuff. A little odd, but fun.