{HEAD ~ Useful breaking activators} include acid generating breaking activators, sulfur containing breaking {TAIL ~ activators} and reducing agent breaking activators 
{ HEAD ~ Useful breaking activators } include acid generating breaking activators , sulfur containing breaking { TAIL ~ activators } and reducing agent breaking activators
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH