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