Looking on the internet deeply has found these results:

I prefered to do is the most popular phrase on the web.

I prefered doing 11,700 results on the web	I prefered to do 1131,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I prefered to stay in Madrid and cure Diego here.	I think he didn't come to Fiorito for last 14 years because he prefered to have idealistic image or the picture of the poor people. They have prefered to avoid the confrontation! I prefered to stay in Madrid and cure Diego here. I forgot that you prefered wine to coffee, Janos. I was married, but at night he prefered to sleep around then he prefered to go and get killed by the Germans, rather than be with me I would have prefered a cop, a family man... Evidentally he prefered his friends to you. I'd personnaly prefered if people could just come upstairs and like bid on my entire room.

I prefered doing

11,700 results on the web

I prefered to do

1131,000 results on the web

More popular!

I think he didn't come to Fiorito for last 14 years because he prefered to have idealistic image or the picture of the poor people.
They have prefered to avoid the confrontation!
I prefered to stay in Madrid and cure Diego here.
I forgot that you prefered wine to coffee, Janos.
I was married, but at night he prefered to sleep around then he prefered to go and get killed by the Germans, rather than be with me
I would have prefered a cop, a family man...
Evidentally he prefered his friends to you.
I'd personnaly prefered if people could just come upstairs and like bid on my entire room.