Japanese vowels as relating to Japanese verb bases

The 5 pure vowels a, i ,u, e, o in Japanese correspond to the 5 verb bases. The verb nomu - to drink, in the 5 verb bases would be.

Base I - noma, (a. ah as in stick out your tongue and say...)

Base II - nomi, (i, pronounced ee as in meet),

Base III nomu, (u, pronouned ooh as in moo moo here and a moo moo...)

Base IV nome, (e, pronounced eh as in bed),

Base V nomo (o even the Hideo kind).