los zapatos a guardar
los zapatos a guardar .
l o s WORD_BOUNDARY θ a p a t o s WORD_BOUNDARY a WORD_BOUNDARY ɣ w a ɾ ð a ɾ WORD_BOUNDARY
l o s WORD_BOUNDARY z a p a t o s WORD_BOUNDARY a WORD_BOUNDARY g u a r d a r WORD_BOUNDARY