Examples: uttrāsa → uttāsa (not utttāsa), mantra → manta (not mantta), indra → inda (not indda), vandhya → vañjha (not vañjjha) The sequence vv resulting from assimilation changes to bb Example: sarva → savva → sabba, pravrajati → pavvajati → pabbajati, divya → divva → dibba, nirvāṇa → nivvāṇa → nibbāna Total assimilation, where one sound becomes identical to a neighboring sound, is of two types: progressive, where the assimilated sound becomes identical to the following sound; and regressive, where it becomes identical to the preceding sound.
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