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