Therefore, {TAIL ~ the pushing lever} 64 is securely inserted into the space between {HEAD ~ the two movable stockers} 
Therefore , { TAIL ~ the pushing lever } 64 is securely inserted into the space between { HEAD ~ the two movable stockers }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD