Existential statements are most often formed with the verb ayaaw- 'to be', which can also mean 'to have'. The verb is inflected.
Alternatively, a French construction ila (past tense: iyave) can be used.
Source: Fleury 2007
Source: Laverdure and Allard 1983: 25
Source: Fleury 2007
Source: Laverdure and Allard 1983: 220