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