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