ⵖⴰⵢⴰⵏ ⴰⵖⴼ ⵉⴱⵟⵟⵓ “ⵙ” ⴰⵎⴰⴳⵓⵔ ⴰⵎⵣⵡⴰⵔⵓ “ⵔ0”, ⴰⵛⴽⵓ “ⵔ0” = ⴰ - ⵇ0ⴱ = ⵎⵙ - ⵇ0ⵏⵙ = (ⵎ - ⵇ0ⵏ)ⵙ.