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