1. Aku & Ku

2. Aku & Ku Ku is a short form of Aku.
Use it to refer to yourself in an informal or intimate context.
Ku is used a lot in movie dialogue and in literature
Aku and ku are not normally used in formal or semiformal occasions where saya would be more appropriate

3. Personal pronoun I Kulihat tak seorang pun yang berani berbicara.
I saw that not a single person dared say a word.

4. Possessive Pronoun - my
Rumahku – my house
Hatiku tetap setia kepadamu.
My heart is still faithful to you.
Ini sepedaku
This is my bike

5. Ku with passive Uang itu belum juga kuambil.
I havent collected the money yet.
(literally: The money has not yet been collected by me)
Waktu setengah jam itu kugunakan untuk beristirahat.
I used the half hour to rest.
The half hour was used by me to rest.