OK, strictly speaking, three shapes, for what we have here are three classic styles beautifully illustrated in reader’s contributions. No messages were left with these sweet contributions, so we can only go on what the pictures themselves reveal.
At top left we have a cute and fluffy Heart, always a favorite with the romantically inclined.
And last but not least, the young lady appears to be giving us a flash of her neat Landing Strip from the passenger seat of a car. Naughty girl!