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