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