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