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