The coder!

This Is a game that requires mental strength!
One person will put up a coded message, which everybody has to figure out. They need to give a hint too. Whoever gets it first, gets to make the first code!
(if your the coder, please check actively to approve if someone gets the code!)


FIRST CODE! (from fifyfofumotter)
9, 12,9,11,5, 16,9,5
Hint;Learn your abc's!
Answer:I like pie
Decoder;phiphiphi

SECOND CODE (brought to you by phiphiphi)
What comes next?
O,T,T,F,F,S,S,?
Hint:counting plays a role too!
Answer: e comes next. One,two,three,four,five,six,seven,eight.
Decoder:kukelekuuk00

THIRD CODE (by Kukelekuuke00)
What's the next number?
987 610, 377, 233, 144, 89, ?
Answer:55
Decoderhiphiphi

FOURTH CODE (by phiphiphi)
totmaIom
allyawesea
sgngikamt
ecretmessa
Answer:I am totally awesome at making secret messages
Decoder:FiFyFoFumOtter

FIFTH CODE: (by fifyfofumotter)
Dear,G. Woo! D. nd J. got Busy!
Hint: look for deformalities.
Answer:
Decoder:

 

Nice! But note to future decoders, please wait until your post was accepted.

 

Is it phiphiphi?
I got f since 6=f, then 6 divided by two 3, phiphiphi?

 

Or, does r come next?
Hard code, lol

 

Oh I see kukelekuuk00, make your code

 

I advise hidden sentences, since that's not really a code, but a puzzle.

 

I am totally awesome at making secret messages

 

Did I get it?

 

Yeah but I still solved it in case. Try mine

 

Dear,G.
Woo! D. nd J. Got busy!
Hint: drop the bomb!

 

Code was Good job...next person to see this can make a code