It's my understanding that there are halachic reasons to avoid saying or writing some of God's Names for no reason. How far from the correct spelling or pronunciations must one deviate to avoid these complications? For example, many people with Ashkenazi pronunciation will say or write E-lokeinu, replacing the ה with a ק or a כּ. Does this "work" in terms of rendering the sacred name profane enough for common usage? Doesn't the new spelling/pronunciation still contain a related, and similarly holy, theonym within the first two letters? Also, there is another Name, the one that starts with a י and ends with a הּ. If one spells or pronounces it ה, without the aspiration associated with the mappiq הּ, is this sufficiently different for everyday use?