a trailing edge extending along a second line which intersects said first line, wherein {HEAD ~ a length} between {TAIL ~ the leading edge} and the trailing edge adjacent to the convex edge is less than the first length of the first circumference of the open top end of the plastic foam conical body and a length between the leading edge and the trailing edge adjacent to the concave edge is less than the second length of the second circumference of the closed bottom end of the plastic foam conical body, and 
between
a trailing edge extending along a second line which intersects said first line , wherein { HEAD ~ a length } between { TAIL ~ the leading edge } and the trailing edge adjacent to the convex edge is less than the first length of the first circumference of the open top end of the plastic foam conical body and a length between the leading edge and the trailing edge adjacent to the concave edge is less than the second length of the second circumference of the closed bottom end of the plastic foam conical body , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH