no no son perros es un oso
no no son perros es un oso .
n o WORD_BOUNDARY n o WORD_BOUNDARY s o m WORD_BOUNDARY p e r o s WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY o s o WORD_BOUNDARY
n o WORD_BOUNDARY n o WORD_BOUNDARY s o n WORD_BOUNDARY p e r r o s WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY o s o WORD_BOUNDARY