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