DU$17"1)$ Sistemu ar$$r$$ nwere ngwungwu ngwanr$$ nke ejiri jikwaa mmek$$r$$ta na ngwaike.

K$$waa ihe at$(3)$ d$$ na ngwugwu ngwanr$$

$2)$ Enwere $$t$$t$$d$$ ngwa mkpanaka enyi na enyi d$$ n'ah$$a taa d$$ ka nkata, egwuregwu na ngwa nyocha ah$$ike$.$

Ch$$p$$ta ihe d$$ iche n'etiti ngwa ala, web$$ na ngwa ngwak$.$ Nye ihe at$$ maka ngwa $$ b$$la$.$