{HEAD ~ The two second main grooves} are disposed on {TAIL ~ two sides} of the first main groove in the tire width direction 
are disposed on
{ HEAD ~ The two second main grooves } are disposed on { TAIL ~ two sides } of the first main groove in the tire width direction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH