Learning korea. [adding by vocal]

vocalㅏ/a atau ㅗ/o => adding of 아요/ayo.
- 하/ha => + 여요/yeoyo.
- not last byㅏ/a or ㅗ/o => + 어요/eoyo.
...가다/ga-da => + 가요/gayo = i go , u go
먹다/meok-da => 먹어요/meogeoyo = i eat , u go
보다/bo-da => 봐요/bwa-yo = i see , u see
하다/ha-da => 하여요/hayeoyo=> 해요/haeyo= i did , u did