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