Ezubere d? ka ak?k? d? mkpa nke ebe a na-enye ?z?z? ?z?z?, nchekwa zuru oke na ?d?te aka b? ihe kacha mkpa. Sistem? nchekwa ikike d? elu nke ?kwa ab?? maka ?nweta ngwa ngwa ka ihe mgbat? ah? ch?r? na-abawanye. N'ihi ?d? na mmep?ta d? ike nke DHZ, usoro nhazi nke ak?r?ngwa na-ad?gide ad?gide ma nwee akw?kw? ikike af? ise.