Your goal is to find the secret four-color code. The following colors are possible: purple, brown, yellow, green, black, red.
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: ['red', 'yellow', 'brown', 'purple']. Hint: one color is in the correct position and two colors are in the secret code but in the wrong position.
Guess: ['purple', 'brown', 'brown', 'green']. Hint: three colors are in the correct positions.
Guess: ['purple', 'brown', 'brown', 'yellow']. Hint: two colors are in the correct positions.
A B C D
red, red, yellow, brown yellow, yellow, red, yellow purple, green, black, purple purple, red, brown, green