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