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