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