The word "BECO" is spelled with four letters and pronounced /ˈbɛ.koʊ/. The first letter, "B," is pronounced as "bee" and represents the initial sound in the word. The second letter, "E," is pronounced as "eh" and represents a short "e" sound. The third letter, "C," is pronounced as "see" and represents a hard "c" sound. The final letter, "O," is pronounced as "oh" and represents the ending sound in the word. Overall, the spelling of "BECO" accurately reflects its pronunciation.