As shown in FIG 7, {HEAD ~ each saw kerf} 42 is aligned with {TAIL ~ a passage} 38 
is aligned with
As shown in FIG 7 , { HEAD ~ each saw kerf } 42 is aligned with { TAIL ~ a passage } 38
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH