wherein, {HEAD ~ a mass} of {TAIL ~ second fibers} has been added to at least some of the first threads, said mass of second fibers being incorporated in the fabric, said mass filling up at least a substantial part of the holes left in the fabric; and 
of
wherein , { HEAD ~ a mass } of { TAIL ~ second fibers } has been added to at least some of the first threads , said mass of second fibers being incorporated in the fabric , said mass filling up at least a substantial part of the holes left in the fabric ; and
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH