F and h - F and H is just the ABCs, but lowercase and with a space in

F and H is just the ABCs, but lowercase and with a space in the middle. It’s the simplest thing ever and you’re still confused.

I did F and H and it was just the ABCs.

My teacher said F and H is the ABCs and I cried.

My dog did F and H and it was the ABCs, I don’t know why.