domestic source income
country
コク / くに
inside, within, between, among, house, home
ナイ / うち
source, origin
ゲン / みなもと
spring, fountain
セン / いずみ
place, extent
ショ / ところ
gain, get, find, earn, acquire, can, may, able to, profit, advantage, benefit
トク / え.る