It's listed here because it's usually used as a "particle word." "Stressing" syllables should usually only occur with elongated vowels and syllables starting with a stopped (doubled) consonant.
Here is a listing of all the syllables that occur in modern Japanese: a ka sa ta na ha ma ya ra wa ga za da ba pa n(or "m") i ki shi chi ni hi mi ri gi ji ji bi pi u ku su tsu nu fu mu yu ru gu zu zu bu pu e ke se te ne he me re ge ze de be pe o ko so to no ho mo yo ro wo* go zo do bo po kya sha cha nya hya mya rya gya ja ja bya pya kyu shu chu nyu hyu myu ryu gyu ju ju byu pyu kyo sho cho nyo hyo myo ryo gyo jo jo byo pyo *--This is really pronounced the same as "o" except by some pre-WWII people.
The reason for "oo" to show up is because of the way the word would be written in Japanese script, usually using the word "big" ("ookii" or "ooi" [rare, but used as a prefix often].) In other words, it's not "GOW-key." It's not "GOO-key." It's "GO-key." (the "Street Fighter" character Gouki, that is.) Consonants can be lengthened, too.They will be different from any official local- izations. Here is how to pronounce the different consonants in Korean: "g" = This is a little difficult for some.Japanese text needed to make correct choices by import gamers cannot be displayed at Game FAQs. At the beginning of a word or phrase, the "g" is actually a "k" sound, without aspiration (that "h" puff of air that comes out when an English speaker says a "k"). For example, "Ma'ou" should be pronounced "ma oh (long)"--tho' I'll probably forget the apostrophe sometimes in this instance. This will probably only occur with "n" sounds in the middle of words (that's the nasal, solitary "n" that is its own syllable) and long vowel patterns.