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