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