Ummm, just remember if we ever have a Scrabble reunion game, we use the Scrabble dictionary for checking words.

Giulio, the only words you can use from that poem are (in an oddly poem like way):

In this world cruel that herd for so she weep eve and no to and was yet the of whom.

The rest are just words that Chaucer made up and no one else have ever used. Damn, dirty Chaucer.