"cell-based structure" . . "clandestine" . "clandestine cells" . "Cells" . "cell networks" . "motley group" . "sleeper cell" . "espionage cell" . "cells" . "operational terrorist cells" . "covert cell" . "cell system" . "clandestine cell system" . "underground cell" . "Sleeper cells" . . "cell based organisation" . . "sleeper agents" . "cell structures" . "cell" . "a discussion of the nontraditional clandestine cell system" . "\\\"supercell\\\"" . "communist cell" . "terrorist sleeper cells" . "clandestine cell" . "resistance cell" . "cellular" . "operational cells" . "militant cell" . "terrorist sleeper cell" . . "terror cells" . "cell organizations" . "cellular fashion" . "underground" . "terror cell" . "cell of the gang" . "terrorist cells" . . "hierarchy of clandestine cells" . "clandestine organization" . "terrorist cell" . "cell structure" . "Clandestine cell system" . . . . . "Clandestine cell system" . . . "clandestine network" . . "covert networks" . "Cell" . "cells and subcells" . "sleeper cells" . "clandestine criminal organization" . "covert cells" .