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