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