This air passes through an internal filter to remove any leftover contaminants from manufacture, any particles that may have somehow entered the drive, and any particles generated by head crash.

a shedder of blood

My family was a circle of all kinds of people—educators, high school dropouts, drop-dead beauties, a dentist, a mechanic, party-hearties, the serious ones, the quiet ones, talkers, gamblers, some in the mainstream, others who lived right on the edge, some who had gone over the edge.

Nondeterministic bottom-up tree automaton recognize the class of regular tree languages.