"I would prefer to go out."
Translation:Basai'n well gyda fi fynd allan.
I had this as a multiple-choice test and was a little amused that I had to pick Basai'n well gyda fi fynd allan. and Basai'n well gen i fynd ma's -- as I consider gyda and ma's "southern" and gen and allan "northern", so both sentences were mixed :)
Showing yet again that this whole "northern/southern" thing is a simplification and nobody speaks 100% "pure" Textbook North/South Welsh.