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