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