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