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