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