This piece alternates between S1/S2 and unison sections every couple of measures. The Soprano and Alto voices do share a line of music. But the Alto voice only shows downstem notes occasionally. I can’t really show you anything else because the whole song alternates in the form that the original two bars do. I have included a couple of additional mesures anyway.

I have 9 pieces to transcribe in the same format, and this inconsistency is rather troublesome.