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