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