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