Kedu ụdị mbanye agbụ ígwè?

Ụdị isi nke draịva yinye bụ ndị a:
(1) Mmebi ike ọgwụgwụ nke efere yinye: N'okpuru mmegharị ugboro ugboro nke nrụgide nsọtụ na nrụgide nsọtụ siri ike, efere yinye ahụ ga-ada ada mgbe oge ụfọdụ gasịrị. N'okpuru ọnọdụ mmanụ nkịtị, ike ike ọgwụgwụ nke efere yinye bụ isi ihe na-egbochi ikike ibu ibu nke draịva yinye.
(2) Mmebi ike ọgwụgwụ nke ihe ndọda na aka uwe: Ihe ndọda na aka uwe na-ebute mmetụta njikọta nke ihe ndọda yinye mbụ. Mgbe mmetụta ugboro ugboro na mgbe ọnụọgụ okirikiri ụfọdụ gasịrị, ihe ndọda na aka uwe nwere ike ibute mmebi ike ọgwụgwụ. Ụdị ọdịda a na-emekarị na draịva yinye mechiri emechi nke ọkara na ọsọ dị elu.
(3) Mkpọchi nke ntụtụ na aka uwe: Ọ bụrụ na mmanụ ahụ adịghị mma ma ọ bụ na ọsọ ya dị oke elu, elu ọrụ nke ntụtụ na aka uwe ahụ ga-arapara. Mkpọchi na-ebelata oke ọsọ nke draịva yinye.