Ride-rode-ridden-riding
Wear-wore-worn-wearing
Buy-bought-bought-buying
Know-knew-known-knowing
Burn-burnt/burned-burnt/burned-burning
Cough-coughed-coughed-coughing
Travel-travelled-travelled-travelling
Hide-hid-hidden-hiding
Smell-smelled/smelt-smelled/smelt-smelling
Break-broke-broken-breaking
Hurt-hurt-hurt-hurting
Nod-nodded-nodded-noding
Tie-tied-tied-tying
Worry-worried-worried-worrying
Fry-fried-fried-frying
Throw-threw-thrown-throwing