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