 component is present in an amount of from about 1 to {HEAD ~ about 99 percent} by {TAIL ~ weight} based on the combined quantities of components and ; and 
by
component is present in an amount of from about 1 to { HEAD ~ about 99 percent } by { TAIL ~ weight } based on the combined quantities of components and ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH