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