Our, ours; by us. Not including the person addressed. Compare [Richardson 1885]
When added to trisyllabic words ending in -ka or -tra, the n is rejected. Satrokay [satroka]. Our hat. Fantratray [fantratra]. Known by us. [Richardson 1885]
-ay: contraction of -nay after words ending in -ka or -tra, as satrokay, our hat; fantatray, known by us. [Richardson 1885]
our; done by us (exclusive) [Hallanger 1973]