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