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