Someone (mang-) digs down through the soil or dives down to the bottom of the water to get or reach something (-en) as a crab, okkong egg, etc.
Imo mangaskad so ranom.
You dig down (into the soil) to reach (the level of the) water.
Askaden mo taynyi do bahay na.
Dig down (into the soil) to reach the land crab in its burrow.
Askaden ko karahem no pangoytan.
I dive down to reach the depth of the place for octopus.