Your goal is to find the secret four-color code. The following colors are possible: black, brown, purple, orange, green, yellow.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['brown', 'black', 'green', 'yellow']. Hint: one color is in the correct position and two colors are in the secret code but in the wrong position.
Guess: ['black', 'black', 'purple', 'green']. Hint: three colors are in the correct positions.
Guess: ['black', 'black', 'brown', 'green']. Hint: two colors are in the correct positions.
A B C D
brown, green, black, yellow yellow, green, purple, yellow yellow, black, purple, green orange, green, green, green