As a follow-up to https://t.co/Vjxvpq7Owa on distinctive kana for e vs. ye, here are some more katakana only few of you will ever have seen before: wi, wu, we. From the (in yotsugana 四つ仮名-contexts) well-known Kenshuku ryōko-shū 蜆縮涼鼓集 (1695) @ https://t.co/ckTvWEe6zU 1/ https://t.co/YmY7i9zCga https://t.co/v84LWAQ9nt