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