Add a Letter - Asian Capitals

1. TUBER BEIRUT
2. JIBING BEIJING
3. HYDRA RIYADH
4. CASINO NICOSIA
5. AMMAN MANAMA
6. TOOK TOKYO
7. HAD DOHA
8. SATAN ASTANA
9. SUMAC MUSCAT
10. LOSE SEOUL
11. BULK KABUL
12. ELM MALE
13. EARTH TEHRAN
14. HUSBAND DUSHANBE
15. LID DILI