ⵎⴰⵢⴷ ⵉⴳⴰ c ⴰⵎⵙⵉⵏ, ⴷⴰ ⴰⵖⴷ ⵜⴰⴽⴽⴰ ⵜⵓⴱⴹⵓⵜ ⵏ c ⵅⴼ 2; ⵉⵎⵉⴹ ⴰⵎⴷⴷⴰⴷ.