esto es un oso o es un perro qué es
esto es un oso o es un perro qué es ?
e s t o WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY o s o WORD_BOUNDARY o WORD_BOUNDARY e s WORD_BOUNDARY u m WORD_BOUNDARY p e r o WORD_BOUNDARY k e WORD_BOUNDARY e s WORD_BOUNDARY
e s t o WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY o s o WORD_BOUNDARY o WORD_BOUNDARY e s WORD_BOUNDARY u n WORD_BOUNDARY p e r r o WORD_BOUNDARY q u é WORD_BOUNDARY e s WORD_BOUNDARY