(vowel)ys or ies

boy boys
key keys
donkey donkeys
galley galleys
day days
bay bays
trolley trolleys
monkey monkeys
valley valleys
turkey . turkeys
holiday holidays
motorway motorways
tray trays
city cities
lady ladies
fly flies
country countries
gallery galleries
baby babies
enemy enemies
army armies
daisy daisies
diary diaries
lorry lorries
factory factories
company companies
pony ponies
puppy puppies
berry berries
penny pennies