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