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