A crab (may-) burrows into a hole in the ground to wait for the molting stage.
the hole is generally covered over
Mayomon iyaw tatos do tana.
The coconut crab burrows into (the hole in) the ground.
Someone (mang-) goes to dig for crabs (-en) by uncovering a hole and pulling the crab out.
Mangomon si āmang do Ranso.
Father goes to dig for (crabs) at Ranso.
Omonen taw bīrok kwaw a tatos.
Let's go to dig for coconut crabs that I have knowledge of (in my memory).