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