import math

def four_squares (number: int) -> list[int, int, int, int]:
    limit = math.ceil(math.sqrt(number))

    for a in range(number):
        if a ** 2 <= number:
            for b in range(number):
                if a ** 2 + b ** 2 <= number:
                    for c in range(number):
                        if a ** 2 + b ** 2 + c ** 2 <= number:
                            for d in range(number):
                                if a ** 2 + b ** 2 + c ** 2 + d ** 2 == number:
                                    return [a, b, c, d]


    raise ValueError("something wrong here")