Inverting waveforms from Moogerfoogers

OK hopefully this will be an easy enough question.

Is there any way to invert a waveform by any of the moogerfoogers? I want to invert the sawtooth waveform on the FreqBox and I have all the foogers, including 2 CP-251’s. So I’m wondering if it’s possible within the realm of moggerfoogers alone (no external controls).

Any ideas? Thanks.

I could be wrong, but wouldn’t that happen if you inputted the original waveform into any input of the CP-251 mixer, and then took the output from the -ve mixer output? Also, if you have one of the newer CP-251s with the standalone Attenuators that go from -5 to +5, I’d think you could invert by plugging into one of those, and turning it to -5.