a rapier receiving {TAIL ~ at least two yarns} from said yarn feeders for {HEAD ~ insertion} simultaneously 
a rapier receiving { TAIL ~ at least two yarns } from said yarn feeders for { HEAD ~ insertion } simultaneously
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH