I used to make a game of seeing how few matches, or how many deliberate mismatches, I could get away with while still passing the captcha. It asks for 4 bus ima

I used to make a game of seeing how few matches, or how many deliberate mismatches, I could get away with while still passing the captcha. It asks for 4 bus images? How about 3 bus images, or 2 bus images and a car?