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