Sorta confused as to whether you're using a computer program to do this or doing it in real life.
If you're using a program: what program?
If you're doing it in real life, use alcohol or gasoline as the ignition material. (For example: O--P--2, the --'s being just lines of gas or alcohol). Alcohol would ignite the fastest and cleanest but it evaporates extremely fast.
(Reminds me, I've seen some interesting things with alcohol, if you put it inside one of those big blue watercooler jugs, and slosh it around so it coats the sides of it with alcohol, then stick a match in (do this using proper safety procedures, unless you want to have your hands, or worse blown off)
The noise is really f***ing loud!!
You can only do it one time with the watercooler jug in a short time since water condenses inside, and vaporizes, making it impossible to light the alcohol again.