o- (lu/n) ravine, valley, depression. cf. ekiwonko.

e- (ki/bi) ravine, valley, depression. cf. oluwonko.

o- plur. empookowooko; also oluwonkowonko (lu/n) opening, cavity, something which has been dug out. olu- wookowooko mu jjinja, an opening in the rock. cf. wool a.