These suggestions were tried with good results by elders in Africa, the Americas, Asia, Australia, and Europe.
هٰذِهِ ٱلِٱقْتِرَاحَاتُ أَتَتْ بِنَتَائِجَ جَيِّدَةٍ حِينَ جَرَّبَهَا شُيُوخٌ فِي آسِيَا ،‏ إِفْرِيقْيَا ،‏ ٱلْأَمِيرْكَتَيْنِ ،‏ أُورُوبَّا ،‏ وَأُوسْتْرَالِيَا .‏