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.

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.

a shedder of blood

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