How to make a Coca Cola soda fountain machine with 3 different drinks at home

How to make a Coca Cola soda fountain machine with 3 different drinks at home. In my case, it's Coca Cola, Fanta, and Sprite, but you can use any drink!
The following is required.
cardboard
Battery 1-9V
DC 6V mini air pump motor
3 x Push Button Switch
2 thin thick tubes
a front line
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