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