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