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