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