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