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