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