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