The power source E1 consists of two groups of cells connected in parallel with each other, {HEAD ~ each group} consisting of {TAIL ~ five 1.5 volt cells} in series 
consisting of
The power source E1 consists of two groups of cells connected in parallel with each other , { HEAD ~ each group } consisting of { TAIL ~ five 1.5 volt cells } in series
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH