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