BY
ビャビュビョ — The BY Row
01
Read “bya, byu, byo”
The BY set is a full-size ビ (bi — ヒ with a dakuten) plus a small ャ, ュ, or ョ: ビ + ャ = ビャ (bya), ビ + ュ = ビュ (byu), ビ + ョ = ビョ (byo), one syllable each. ビュ is the one you'll use in loanwords (“view,” “beauty”); ビャ and ビョ stay rare.
One syllable: ビュ is “byu,” one beat — like the start of “beauty.” Keep the dakuten ゛ on ビ separate from the small ャ ュ ョ below it.
02
Pronunciation at a glance
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Words with the BY kana
ビュ opens several loanwords; ビャ and ビョ are rare. Here are a few.
ビューbyūview
ビューティーbyūtībeauty
インタビューintabyūinterview
デビューdebyūdebut
ビャクシンbyakushinjuniper (tree)
ビョウbyourivet
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What's next
Last of all is the PY set (ピャ ピュ ピョ) — built on ピ (ヒ with a handakuten), and read “pya, pyu, pyo.” It completes the katakana syllabary.