{TAIL ~ The apparatus} 4, wherein {HEAD ~ the projecting part} is integrally formed with a main body of the mask 
{ TAIL ~ The apparatus } 4 , wherein { HEAD ~ the projecting part } is integrally formed with a main body of the mask
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH