Your goal is to find the secret four-color code. The following colors are possible: purple, yellow, black, white, green, blue.
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: ['green', 'black', 'purple', 'white']. Hint: two colors are in the correct positions.
Guess: ['purple', 'purple', 'white', 'white']. Hint: none of the guessed colors are present in the secret code.
Guess: ['yellow', 'yellow', 'black', 'black']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['green', 'black', 'yellow', 'green']. Hint: three colors are in the correct positions.
A B C D
green, black, yellow, blue black, green, blue, green blue, black, blue, blue white, black, white, yellow