A Swedish set, either G/G/G or G/G/B:
Liv, Lycka & Lo
All are word names: Liv means 'life', Lycka 'happiness' and Lo 'lynx'. I don't know if this Lo is a boy or a girl, it's used for both genders. I'm sure some people will find it cheesy, but I don't. All names are common enough, they didn't make something up just to fit the theme, and other than having the same initial, they're not very similar. I like it. :)
What do you think?