For someone (actor -um- & theme) to go away stealthily, or without leave taking, as a mother from her child, a husband abandoning his family.
For someone or something (actor & theme) to escape to a particular place (loc ref -on), as for a thief to escape when someone pursues him, a dog being held by his master, penned animals.
Ad Batad ya mi'id layowon di mangākaw ti ag'aga ya na'ah'ūpan ti matī'id an amin nan dālan.
In Batad there is no place to which a thief can escape because he can easily be found because all the trails are steep.
-on: layowon
For someone or something (agent umi- & inst) to escape with someone or something else (theme i-), as for a dog to escape with meat, a person with a stolen chicken.