In order to tighten the shoelace 220 in {HEAD ~ a state} wherein {TAIL ~ the shoelace} 220 is knotted as described above, portions of the shoelace 220 which just exit the main through hole 134, are pulled 
In order to tighten the shoelace 220 in { HEAD ~ a state } wherein { TAIL ~ the shoelace } 220 is knotted as described above , portions of the shoelace 220 which just exit the main through hole 134 , are pulled
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH