Haec ciuitas multum benè situatur: Nam ad eam quasi totus mundus pro mercimonijs confluere potest: De hac dicunt Christiani qui ibi sunt, quòd credunt Imperatorem plus de ea accipere, quám Regem Franciæ de toto regno suo:

But in order to diphthongize oa, ea, and eo, when the accent naturally falls on the first vowel, the accent must shift to the second, which is a dominant vowel.

and when I sang it, "I feel, I feel, I feel, I feel like a morning star!" he struck his thigh, and said, "Ea!