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