debe ser un helicóptero
debe ser un helicóptero .
d e β e WORD_BOUNDARY s e r WORD_BOUNDARY u n WORD_BOUNDARY e l i k o pː t e ɾ o WORD_BOUNDARY
d e b e WORD_BOUNDARY s e r WORD_BOUNDARY u n WORD_BOUNDARY h e l i c ó p t e r o WORD_BOUNDARY