is it possible to have a wordpress MU within a wordpress MU?

So right now i have 3 wordpress mu all installed separately on multiple shared servers. Is there a way to have one install of wordpress mu and have multiple wordpress mu within one shared server?

if it can't be done with shared server can it work in a vps or dedicated?

also, will multiple DB and the rest of plugins WPMUDEV will function the same?

Thanks,
Fred