{TAIL ~ a second biasing means} for {HEAD ~ biasing} said guide member in a direction projecting from said head 
{ TAIL ~ a second biasing means } for { HEAD ~ biasing } said guide member in a direction projecting from said head
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH