id	keyword
sc-1110	map
sc-1110	spider
sc-1110	spider map
sc-1110	grid
sc-1110	hub
sc-1110	maps
sc-1110	points
sc-1110	lines
sc-1110	algorithm
sc-1110	generation
sc-1110	map points
sc-1110	solution
sc-1110	process
sc-1110	area