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