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