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