briefen angolul

brief▼◼◼◼[UK: briːf] [US: ˈbriːf]

re : regarding▼

document [documented, documenting, documents]▼◼◼◼verb
[UK: ˈdɒ.kjʊ.ment] [US: ˈdɑː.kjə.ment]

confirming by documents▼