def convert_to_binary(number):
    if number < 0 or number >= 16:
        raise ValueError("Input must be between 0 and 15 inclusive.")
    
    binary_list = []
    while number > 0:
        binary_list.insert(0, number % 2)
        number = number // 2
    
    # Ensure the binary list has 4 bits for numbers less than 16
    while len(binary_list) < 4:
        binary_list.insert(0, 0)
    
    return binary_list