At block 440, such ECC may be written to a spare area of NAND memory while {HEAD ~ associated information} may be written to {TAIL ~ a main area} of NAND memory 
written to
At block 440 , such ECC may be written to a spare area of NAND memory while { HEAD ~ associated information } may be written to { TAIL ~ a main area } of NAND memory
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH