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