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