How can I convert this grammar into a normal form?

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Hi everyone,

I have a grammar to convert into a normal form, but I have no idea how to do that. And from this normal form, I have a lot of other things to do.

Could you please convert me this grammar into a normal form:

S --> aQ | a
Q --> aQ | bbS | bS | b

Thanks in advance,
 
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It appears that the language generated by this grammar consists of all strings of length at least 1, containing only terminal symbols a and b, such that the string starts with at least 1 a, and has no more than 2 b's in a row.

Therefore, perhaps...

S --> AQ | a

A --> a
B --> b
D --> BB

R --> AQ

Q --> AQ | DR | DA | BR | BA | b

Is that what you're after? I just kind of threw that together, so it can probably be cleaned up considerably (if it's right...)
 

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