Kä la̱t duŋ Arithtötlle cuɛ tekɛ lua̱ŋ ɛlɔ̱ŋ kam pi̱löthöpäri̱ ce̱tkɛ Al-kindi (9th century), Abicenna (980-Kornyoot 1037) kɛnɛ Aberreoth (12 century).