original: using their tail to support their weight , they deliver kicks with their powerful hind legs .
simplifications: using their tail to hold their weight , they kick with their strong hind legs . using their tail to support their mass , they deliver kicks with their powerful back legs . they deliver kicks with their powerful hind legs using their tail to support their weight . using their tail to hold their weight , they deliver kicks with their powerful hind legs they deliver kicks with their powerful hind legs by using their tail to support their weight . using their tail to support their weight , they deliver kicks with their powerful hind legs . using their tail to support their weight , they deliver kicks with their powerful back legs . using their tail to hold up their weight , they kick with their strong back legs .