In accordance with , {HEAD ~ HDD} 20 are preferentially connected to row 3 among rows 1 to 3 and then HDD 20 are preferentially connected to {TAIL ~ row} 2 
In accordance with , { HEAD ~ HDD } 20 are preferentially connected to row 3 among rows 1 to 3 and then HDD 20 are preferentially connected to { TAIL ~ row } 2
OTH 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 OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH