Verified answer

big kana and small vowel kana (ァィゥェォ) combination is One mora.

so ウェ pronounce We (not English word "we"), ウィ is Wi, ウォ is Wo.

ancient Japanese had we, wi and wo pronounce, and they spelled ヱ, ヰ, and ヲ.

but in modern Japanese, don't use those pronounce for native Japanese words.

ヱ and ヰ are are don't use usually.

ヲ / を is use for particle word. pronounced just " O" .

wi, we, wo sound is use for all foreign loan words, like ウェールズ (Wales), ウィーン(Vienna) ウォーター(water)

but why you ask same question?

oh, I guess you are......