Which words in this excerpt from “The Tyger” support the analysis that creating the tiger was difficult or grueling? And what shoulder, & what art Could twist the sinews of thy heart? And when th

Which words in this excerpt from “The Tyger” support the analysis that creating the tiger was difficult or grueling?

And what shoulder, & what art

Could twist the sinews of thy heart?

And when thy heart began to beat,

What dread hand? & what dread feet?

What the hammer? what the chain?

In what furnace was thy brain?

What the anvil? what dread grasp

Dare its deadly terrors clasp?