How to sing rtr?

[LeydeLuz]

Should the RTRs be vibrated or can they simply be pronounced like in the audios?

 

[ForVery]

Should the RTRs be vibrated or can they simply be pronounced like in the audios?

https://ancient-forums.com/viewtopic.php?f=24&t=60932

 

[Serbon]

Should the RTRs be vibrated or can they simply be pronounced like in the audios?

If you feel tired and if it's too much for you to vibrate, you can pronounce aswell. You could also vibrate the letters in FRTR 3 times instead of 9 if it's too much for you.