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