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