{TAIL ~ at least a part} of the first element is closer to the front surface than {HEAD ~ the second element} is to the front surface 
{ TAIL ~ at least a part } of the first element is closer to the front surface than { HEAD ~ the second element } is to the front surface
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH