dog, dogs ฯลฯ

eat, eats ฯลฯ

tall, taller ฯลฯ

begin, beginner ฯลฯ

tall, tallest ฯลฯ

walk, walked ฯลฯ

walk, walking ฯลฯ

run, runner ฯลฯ

stop, stopping ฯลฯ

lift, lifting ฯลฯ

grade, grading ฯลฯ

have, give ฯลฯ

having, giving ฯลฯ

judge, judging ฯลฯ