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