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