# What is the difference between ${\bf P ^{\bf FewP}}$ and ${\bf UP ^{\bf FewP}}$?

What is the difference between $${\bf P ^{\bf FewP}}$$ and $${\bf UP ^{\bf FewP}}$$ ? In other words, what is the language that can be decided by $${\bf UP ^{\bf FewP}}$$, but cannot be decided by $${\bf P ^{\bf FewP}}$$ assuming that $${\bf P} \not = {\bf UP} \not = {\bf FewP}$$.