検索ワード: cyfriflenni (ウェールズ語 - 英語)

cyfriflenni, biliau, anfonebau a anfonir at gwsmeriaid;
statements, bills, invoices sent to customers;

caiff y rhan fwyaf o lythyrau, cardiau post, biliau, cyfriflenni, cardiau cyfarch, a llyfrynnau bach eu dosbarthu fel llythyr.
most letters, postcards, bills, statements, greetings cards, and small brochures will be classed as a letter.