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