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