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