The spelling of the word "Catreina" can be explained using the International Phonetic Alphabet. The first syllable "Cat" is pronounced /kæt/, with the "a" sound as in "cat" and a hard "t" sound. The second syllable "rei" is pronounced /reɪ/, with the "ei" pronounced as a long "a" sound, as in "rain". The final syllable "na" is pronounced /nə/, with the "a" pronounced as a schwa sound. Therefore, "Catreina" is spelled with a "c", an "a", a "t", an "r", an "ei", an "n", and an "a".