What is the most important rule in spelling?
Some are the following:
1. if there is e or i after C it will sound S (centre, circle,
circuit), otherwise K (come, cat, cute, crystal).
2. there is not a single word in English that has letter Q
without U after that. (quen, question, quite, quit, quality), and
if a letter ends with Q there must be "ue" after that.(plaque,