127. "-ii" is suffixed to dasa, when it is preceded by some other
numeral, to form ordinals denoting a lunar day. In that compound the
last vowel of the preceding numeral sometimes becomes aa.
eka + dasa + ii = ekaadasii (the 11th day)
dvi + dasa + ii = dvaadasii (the 12th day)
pa~nca + dasa + ii = pa~ncadasii or pa.n.narasii (the 15th day)
catu + dasa + ii = caatuddasii (the 14th day)
(The first vowel is lengthened here)
128. "-ka" is suffixed to the numerals to form the collective nouns.
dvi + ka = dvika (a pair)
ti + ka = tika (a triad)
catu + ka = catukka (consisting of four)
sata + ka = sataka (a group of a hundred)
dasa + ka = dasaka (a group of ten)
(ii) Bhaava (Gerundial)
129. -taa, -tta, -ttana, .nya and .neyya are suffixed to some nouns to
denote the state, nature or quality of being.
Remark. The derivatives formed with -taa are in the feminine; those
formed with -tta, -ttana, .nya and .neyya are in the neuter. Paa.tava
and gaarava are in the masculine. Pa.tutaa, garutaa and pa.tutta.m,
garutta.m, which are in the feminine and the neuter respectively are
also found.
(iii) Avyaya (Indeclinables and adverbials)
132. "-kkhattu.m" is suffixed to the numerals to form the
multiplicative adverbs.