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