12punch. I probably would not have figured that out either.

I have 8 characters available on a standard plate but only six characters on a clean fuel plate. If I went with a standard plate I came up with "HYBR PWR". With the six characters all I could think of is "TOYHYB" or "HYBTOY". I can't fit a space between the first three and last three characters. Luckily my drive to work is easy and there aren't any HOV lanes going to or from work. I don't use them too much (maybe once a month) but it would be nice to have the clean fuel plates just in case. So I'm leaning towards a six character plate.

Is it obvious enough?