In declarative sentences, double object constructions appear to be more frequent than indirect object constructions, but the latter are obligatory where the indirect object is the focused/questioned element. Example 99 shows that when focused and fronted, the recipient has to be coded as an indirect object.
Adone (2004) gives an IOC construction in which the recipient is introduced by pu.
She explains that this construction "is available for benefactives, and is dependent upon the presence of a preposition similar to English to."
Source: Adone 2004