No forms of worship have been noticed, but there is a belief in various kinds of spirits, the most important of whom is Biliku, usually regarded as female, who is identified with the north-east monsoon and is paired with Tarai the south-west monsoon. Biliku and Tarai are the producers of rain, storms, thunder and lightning. Fire was stolen from Biliku. There is always great fluidity in native beliefs, so some tribes regard Puluga (Biliku) as a male. Three things make Biliku angry and cause her to send storms; melting or burning of bees-wax, interfering in any way with a certain number of plants, and killing a cicada or making a noise during the time the cicadae are singing. A. R. Brown[346] gives an interesting explanation of this curious belief. Biliku is supposed to have a human form but nobody ever sees her. Her origin is unknown. The idea of her being a creator is local and is probably secondary, she does not concern herself with human actions other than those noted above. E. H. Man has carefully studied and reduced to writing the Andamanese language, of which there are at least nine distinct varieties, corresponding to as many tribal groups. It has no clear affinities to any other tongue[347], the supposed resemblances to Dravidian and Australian being extremely slight, if not visionary. Its phonetic system is astonishingly rich (no less than 24 vowels and 17 consonants, but no sibilants), while the arithmetic stops at _two_. Nobody ever attempts to count in any way beyond _ten_, which is reached by a singular process. First the nose is tapped with the finger-tips of either hand, beginning with the little finger, and saying _ubatul_ (one), then _ikpor_ (two) with the next, after which each successive tap makes _anka_, "and this." When the thumb of the second hand is reached, making _ten_, both hands are brought together to indicate 5 + 5, and the sum is clenched with the word _arduru_ = "all." But this feat is exceptional, and usually after _two_ you get only words answering to several, many, numerous, countless, which flight of imagination is reached at about 6 or 7.