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