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