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