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