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