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