.....wierd thing, I made a drawing yesterday just for the hell of it and I somehow managed to make an almost exact copy of the air symbol between everything....by accident. hell Ill show it to you [link]
Water. Earth. Fire. Air. Long ago, the four nations lived together in harmony. Then everything changed when the Fire Nations attacked. Only the Avatar, master of all four elements could stop them. But when the world needed him most, he vanished. A hundred years passed and my brother and I discovered the new Avatar- an Airbender named Aang. And although his airbending skills are great, he has a lot to learn before he's ready to save anyone. But I believe Aang can save the world.
It's ok, in most Western elemental things they change them around, it's not a big enough change to make a difference. I think it doesn't matter what order they're in, personally. Just watch out for angry Avatards and you'll be fine