И is top left, whats the other three?
Three? There are 5 that I know of. But I thought the frog said there was 6. psyduck;
A backwards "N" is the top left, like you stated.
The Omega sign is the bottom right.
There is a sign that looks like the bottom half of an hourglass. That's in the bottom left quadrant on the east side of it. There's a sign for the west side that looks like you draw an oval than a vertical line downwards.
Then there is a sign for the top right that looks like you draw 3 sides to a square, then cross it through the middle diagonally.
Damn, you have to shot him to get them :|