Whoa! These r words are reasonably really radical.
They are so in control of those vowels, you know what I'm saying? A simple a becomes an ar, feel the stong arm of the r, what a star! A simple e or an i become er, like you heard of the bird. Then, when r gets a hold of that o, what a show, what a chore in store knocking on your door. Never a bore, look what r does to the vowels in dinosaur. Gotta love that R control!