What is the correct spelling for SIAYGA?

If you meant to type "siayga" but it turned out to be a misspelling, there are a couple of possible suggestions for correction. It could be the word "Sigma", which represents a Greek letter or a brand name. Alternatively, it might be "Sierra", referring to the letter "S" in the NATO phonetic alphabet or the mountain range. Double-check the context to determine the accurate meaning.