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