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