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