R-CH=CH₂ + CH₂=CH-R^' => R-CH=CH-R^' + CH₂=CH₂

The house was built on a bit of a slant and was never quite level.

Then we went to Mead's and pokered until morning.

He had walked the wilds of Imokoi before, he had pierced rakshas illusions, seenthrough the mist of demonic dwimmer-craft centuries ago.