Yeah it’s the last hangul letter of each of their names, so bi-bi-ji would be correct.in korean they pronounce it "bi-bi-ji" iirc, bi for the two eunbi's and ji for umji
ah-hah! that explains it. thank you! :)in korean they pronounce it "bi-bi-ji" iirc, bi for the two eunbi's and ji for umji