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