Did you hear the difference? When we say adjectives that end with i-c, the stress falls on the penultimate syllable, that's the syllable just before the last one. So it's geography, but geographic.
In two other studies the reviewers examined, some 15-month-old babies had been exposed to patterns of fake grammar in which the first syllable of a nonsensical word predicted the last.
This is a three-syllable word with middle syllable stress. You don't really need to put a vowel in the first or last syllable. com- com- comi- sion, sion.