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