In this instance, {HEAD ~ each cross sectional shape} of {TAIL ~ the plurality} of conductors may take various forms such as rectangular, triangular, circular, or ellipsoidal shape 
In this instance , { HEAD ~ each cross sectional shape } of { TAIL ~ the plurality } of conductors may take various forms such as rectangular , triangular , circular , or ellipsoidal shape
OTH OTH OTH OTH HEAD HEAD 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