E rua ngā rarangi pōro o ngā peera pōro whakahāngai-ake, he ara reihi porowhita noa i te mowhiti o waho, me ngā awaawa reihi hohonu e rua i te mowhiti o roto. He ara reihi porowhita kei roto i te mowhiti o waho o ngā peera pōro whakahāngai-ake, me te pokapū piko e ōrite ana ki te pokapū peera. Mā tēnei ka taea e te mowhiti o roto, ngā pōro, me te whare herehere te huri noa i te pokapū peera, me te pupuri i te whakahāngai.
