I've never read this but I can tell you what to look for. Symbolism in literature is using a phrase or word to represent something totally different. It can sometimes be called "hidden meaning". It is usually a meaning that doesn't meet the eye but is very important to the story the author is telling.
DIIN:
* PUno- puNO
* TAyo- taYO
* BAsa- baSATONO:
*Nagbago na ako.
*Nagbago na ako?
*Nagbago na ako!
ANTALA:
*Hindi puti.
Hindi, puti.
*Hindi ako ang mahal niya.
Hindi, ako ang mahal niya.
*Doc Maria, Luisa po ang pangalan ko.
Doc, Maria Luisa po ang pangalan ko.
Habitat destruction and Non-native species.
Can you explain the problem better ?