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