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