Here, {HEAD ~ lands} 4 are divided into one third and two thirds sections from {TAIL ~ alternating ends} on adjacent lands 4 
Here , { HEAD ~ lands } 4 are divided into one third and two thirds sections from { TAIL ~ alternating ends } on adjacent lands 4
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH