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