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