The moon worm qū is the same maggot, but in ancient times the maggot was the same as "wax", and the wax month was the twelfth lunar month.
Of course, the moon worm is not necessarily a variant of "pull". In ancient calligraphy, no matter how much, it is enough to pay attention. In ancient times, typos were not as serious as they are today. There are 10,000 ways to write a longevity picture.
Those that have been identified as variant characters are still those that are used on a large scale. Most of the writing methods are submerged in the long river of history.