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