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