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