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