However, invariably, {HEAD ~ items} of {TAIL ~ trash} become impaled upon or wrapped around the bars 24 
of
However , invariably , { HEAD ~ items } of { TAIL ~ trash } become impaled upon or wrapped around the bars 24
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH