Hi deium;
I think you are using this link, In there you can see the specifications for the different GPIOs.
GPIO 14, 165, 204, 205, 212, 213, 236 and 237 are for analog inputs (A4 and A5).
GPIO 27 and 28 are for I2C. The GPIO 214 is used to set it at LOW before the changes in those MUXes.
In the Edison Breakout Board you can't use those because there are not ADC's in there.
Regards;
CMata.