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