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