Ɣer umedyaz Xellaf FERGANI : « tayri lqayen tettwa6qal s tlata n trekkizin n tebrat n tayri : argaz d tafigurt (timbre), tameṭṭut d izen akked d tansa, wis tlata d lmektub. Tabrat mebla tafigurt ur tettaweḍ ara ɣer bab-is, d tameṭṭut mebla tawaqqna n leḥnana, tabrat mebla tansa d taɣawsa yemmuten werǧin ad taweḍ ɣer wanda ara truḥ »1.