{TAIL ~ The apparatus} includes {HEAD ~ a housing} supporting an eraser head and having a cavity in fluid communication with a suction device 
{ TAIL ~ The apparatus } includes { HEAD ~ a housing } supporting an eraser head and having a cavity in fluid communication with a suction device
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH