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