For something (actor -um- & inst) to tightly confine someone or something (patient), as shoes which are too small which confine the feet.
Umopot nan lūbung han ung'ungnga ti immong'ongngol.
The clothing tightly confines the child because she has become bigger.
The door of a tomb, lubu', confines a bloated body; a foundation beam, oleng, mortice confines the tenon of a foundation post, tū'ud; an outside floor beam, mundīlig, mortice confines the tenon of a corner wall post, bāgat.