[cyborgx7]

You're correct. In fact I'm not seeing any two probe words that will give you a definite piece of positive information, without taking into account a third word.

I made my own mistake when trying to figure out this puzzle, that I didn't notice until your comment prompted me to go back and check through it again. I thought after the three even words, the solution had to BAY or all three even words had to be zeroes. But without using any of the odd probe words, words starting with BU- are also still a possibility.