castillos de arena
castillo de arena
n prep n
castillos de arena ?
k a s t i ʝ o̞ s WORD_BOUNDARY d e̞ WORD_BOUNDARY a ɾ e̞ n a WORD_BOUNDARY
c a s t i l l o s WORD_BOUNDARY d e WORD_BOUNDARY a r e n a WORD_BOUNDARY ? WORD_BOUNDARY