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