Consider the following data from Vietnamese. PASS stands for passive, PERF for perfect, PROG for progressive and FUT for future.
1. Trà được trồng ở Nhật Bản.tea PASS grown in Japan"Tea is grown in Japan."
2. Tôi đang học.I PROG study"I am studying.
3. Anh đã học.I PERF study "I have studied."
4. Anh sẽ học.He FUT study"He will study."
Is there any evidence for affix hopping in Vietnamese?