{TAIL ~ The devices} additionally contain {HEAD ~ a surfactant erosion rate modifier} that cooperates with and interacts with polymers for regulating the rate of erosion of the polymers 
{ TAIL ~ The devices } additionally contain { HEAD ~ a surfactant erosion rate modifier } that cooperates with and interacts with polymers for regulating the rate of erosion of the polymers
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH