I'm thinking on this one, but 4 could be scored with two safeties. 1 can't be done, 2 safety, 3 field goal, 4 two safeties, 5 field goal and a safety, 6 two field goals or touchdown without converting the extra point, 7 touchdown, 8 touchdown and two-point conversion, 9 three field goals or touchdown w/o extra point and a field goal, 10 touchdown and field goal, 11 touchdown two-point conversion and a field goal, 12 four field goals or touchdown field goal and a safety, 13 two touchdown with one failed extra point, 14 two touchdowns. Is a drop kick worth 2 or 3; although probably not been attempted in the last fifty years? I'm done, but if someone else wants to go for a while....