Chaucer constantly uses men with a verb in the singular number, third person. See Notes and Queries for Feb. 8th, 1873, where I have shown that the West-Midland substituted men for the Southern me.
The genitive and possessive are denoted by one form; as, ure, of us; gure, of you; here, of them.
Because elided in these cases.
The Bestiary is far more accurate in this respect.
gangande rhymes with standen (O.E. Miscell., p. 21, ll. 654, 655).