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