Ask HN/PG: YC applications - any successful cases with part time co founders?

I have applied for this round. I know that single founders (for logical reasons) are not likely to succeed. But what about part time co founders? By part time, I mean folks who would work part time for the duration of 3 months (put in may be 20 hours per week) till we raise money. Were there examples of such cases or are these rare?

Reposting - for some reason this did not come in the "ask" tab. I deleted the original post - apologies for any confusion