"A" or "an"

• A white and black cow

• An white and black cow

• A red apple

• An red apple

• A purple grapes

• An purple grapes

• A blue grapes

• A brown dog

• An brown dog

• A brown duck

• A gray elephant

• An gray elephant

• An elephant gray

• A five white cats

• An five white cats

• A fifteen white cats

• A numbers

• An numbers

• A spiders

• An nine spiders

• An nine black and yellow bees

• A bees

• A white sheeps

• A white bees

• An white bees