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