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