at least two air jet devices for receiving {HEAD ~ a plurality} of {TAIL ~ yarns} from said creel and uniting said yarns into a single yarn 
of
at least two air jet devices for receiving { HEAD ~ a plurality } of { TAIL ~ yarns } from said creel and uniting said yarns into a single yarn
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH