料金 りょうきん後納 こうのう郵便 ゆうびんなら
ryōkinkōnōyūbinnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 料金後納郵便

1. If/when postage is paid after delivery; If/when cash-on-delivery is used

Nara Conditional