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