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