However, both current sources 47, 49 share {TAIL ~ the same leads} for current return, {HEAD ~ i.e., the leads} depicted as columns in the array 
However , both current sources 47 , 49 share { TAIL ~ the same leads } for current return , { HEAD ~ i.e. , the leads } depicted as columns in the array
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH