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