Your goal is to find the secret four-color code. The following colors are possible: black, pink, yellow, blue, brown, red.
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: ['black', 'pink', 'red', 'brown']. Hint: two colors are in the correct positions.
Guess: ['black', 'black', 'pink', 'pink']. Hint: none of the guessed colors are present in the secret code.
Guess: ['yellow', 'yellow', 'blue', 'blue']. Hint: one color is in the correct position and one color is in the secret code but in the wrong position.
Guess: ['yellow', 'blue', 'red', 'brown']. Hint: two colors are in the correct positions and two colors are in the secret code but in the wrong positions.
A B C D
pink, yellow, pink, blue pink, yellow, blue, yellow pink, brown, red, blue blue, yellow, red, brown