There was a very good explanation in Vidusara magazine a long ago. they went into extreme details about this. that is how I know this. barely remember the full stuffs. if you can locate those old editions you'll get the complete picture.
hama ekama ehema wenne na ban. hariyata inna ona dennama. kellage waraddama neme kello pita yana eka. dennama waga kiyanan ona ewata.
archi hodai machan. job thiyenawa. karana gaman QS tikak igen ganna kiyanna. private karanna puluwan passe ona tharam.