The word "gelco" is often spelled with a soft "g" and a "k" sound, but the correct pronunciation is with a hard "g" and a "ch" sound. This can be represented in IPA phonetic transcription as /ˈdʒɛlko/. The spelling confusion may stem from the fact that the letter combination "gel" can sometimes be pronounced with a soft "g". It's important to use the correct pronunciation and spelling to effectively communicate with others.