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