Pronounciation of some common words

Hello!

I've always wanted to ask about this. I encounter a lot of words that I'm not sure how to pronounce -- for example, could you help me pronounce the following:

*Sugoi (great): is it su-go-yi or su-go-wi?
*Yoi (good): is it yo-yi or yo-wi?
*Ookii (big): is it oh-kih or oh-kiyi?
...

Thanks!

About the first two, if you ask me if there is any "w" sound in it, no. So it is close to "yi," but there is no strong "y" in it either.

About the third one, again, there is no strong "y" in it either, but I am not sure what you are trying to express with the "h" in it. Just a long sound?

Try this speaking dictionary. Input and click the blue bar w/ Translate and Speak(English, Japanese, etc.)
http://imtranslator.net/translate-and-speak/#window
You can select other language, male/female voice, speaking speed, etc.

There are no w or y sounds in any of those words. The endings sound like the 'e' in the word eat which I represented with 'ii'

su-go-ii

yo-ii

oh-kii

Thank you all!

@AK, yes, I'm adding 'h' to symbolize a long sound