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