Tolkappiyar, Tolkappiyam in English — Shorted-u coalescence Section 1 Chapter 9 kur’r’iyalukarap pun’ariyal
“ There are six kind of words structurally formed with the end shorted- [u] : 1 upon two-letter, 2 upon vowel, 3 upon depending-h, 4 upon hard consonant, 5 upon soft consonant and 6 upon medial consonant. 407/1 That u upon two consonants does not be considered ‘medial upon’. 408/2 One unit of sound - In coalescence, the shorted u with half unit sound will be articulated with one unit of sound before consonant-initial word, in both case-sense and non-case-sense. ”
