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