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