Ihe oru ngo a gụnyere 12 jikọtara ihe ntụrụndụ, nke na mgbakwunye na cha cha ga-agụnye ụlọ nwere 18 puku igwe mpempe akwụkwọ, ụlọ nzukọ, ụlọ nkwari akụ, ụlọ ahịa, ụlọ oriri na ọṅụṅụ na ọbụna ihe nkiri.
