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