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