a certain rate every ~ 02_EXO_16_04 ~ a certain rate every ~ 14_2CH_08_13 ~
 certain rate every ~ 02_EXO_16_04 ~ certain rate every ~ 14_2CH_08_13 ~
 certain rate every day ~ 02_EXO_16_04 ~ certain rate every day ~ 14_2CH_08_13 ~