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