The kaokao (bend or side of the ribs) designs of Te Arawa and East Coast iwi are formed by zig zag lines that create chevrons that can be horizontal or vertical, open with paces or closed repetitive lines. It is sometimes seen to represent the sides and arms of warriors as if caught in haka action.
This page reproduces information from page 28 of the booklet Pūawaitanga o te Ringa - Fruits of our busy hands
These panels are on display at Waruwarutū, Tuakiri | Identity, Level 2, Tūranga.