A sample of "Proto-Indo-European": Mater swesor kmtom sunu derwo bhereg sawel espeket, ek'womos bhrater ewewkwont dhugheter. Owioom rotho wlunaa bherontm widntei kwrnneuti espeket kwesyo hakhs kwetwor iak'om sebhi eest owis, aghnutoi hakhs owis penkwe tu. Penkwe, woghom iak'om widntmos: neghi, keer owioom derwo dheghom ne megam. Neer woghom widntmos:, hakhs treyes, nokwt agontm keer megam, widhewa sneigwh oinomkwe, kwrnneuti bhago westrom nsmei owis gwrrum, aghnutoi ooku penkwe woi. Bhereg swesor no kwesyo mater dheghom sunu dheghom, espeket ghmmenm. Bher ghe bhereg keer bhago oinom neghi pater keer weghontm nu oinos kwetwor gwrrum pholo gwrreei ek'womos owioom esti moi penkwe bhorom owioom moi owis aghnutoi.

LOL: it reads: Mother sister 100 sun tree bright sun "saw" (?), (something or other horse-related) brother (?) daughter. And so on ...

At first I took it to be the tale of the sun and the wind and who was stringer, which is used to illustrate transcriptions of various languages in the IPA. I guess if I needed a PIE Greeking text, I'd use one or more of the versions of Schleicher's fable (link).

Ceci n'est pas un seing.