Hello, Empirical. The CPDL (Choral Public Domain Library) has these words:

Now foot is as I do Tom Boy Tom,
Now foot is as I do Swithen a
And Hick so must trick it all alone
Till Robin come leaping in between a
(now dance with your feet as I do, Tom boy THom
now dance with your feet as I do, along with all of us
and Hick must dance it all alone until Robin comes leaping in between us.)

note: I remember from student days that 'swithin' means between, but I can't verify that online. If it doesn't mean that, then it means rapidly, and the a that follows doesn't mean anything.

The cramp is in my purse full sore
No money will bide therein a
And if I had some salve therefore
O lightly then would I sing a
Hey hoe, the cramp a

(My wallet has diarrhea really badly. No money will stay in it. And if I had some medicine for it, then I would sing lightly, "Hey ho diarrhea!")

[There's elegance for you! - Leeneia]

Robin Hood, said Little John,
Come dance before the Queen a
In a red petticoat and a green jacket,
A white hose and a green-a
(Should be self-explanatory. Hose are stockings.)

Sing after fellows as you hear me,
A toy that seldom is seen a,
Three country dances in on to be,
A pretty conceit as I ween a.
(Fellows, sing what you hear me sing, a pretty thing seldom seen: three country dances in one. It's a pretty thought, I think. )

Note: "in on to be" is "in one to be."

Does that cover it?