Do lesbians have a concept of Top and Bottom?

It's been a long ol time since I've known any lesbians well enough to ask such things, but I followed my brain down a weird line of inquiry, and got to wondering about the current state of the art for the gay gals. I guess I had always assumed it was similar to the dynamics of a gay guy relationship, but then I realized that since men have both an input and an output, they can choose, but it's mechanically a bit different for cis women. Is there any relationship between that, and the slightly more masculine versus feminine flavors? Asking for a friend, who is me. I want to know. Thanks.