to meet; to see (a person) (person に)
あう
会う

there is...
ある

to buy
かう
買う

to write (person に thing を)
かく
書く

to take (pictures)
とる
撮る

to wait
まつ
待つ

to understand (〜が)
わかる

(a person) is in...; stays at...
いる

