{HEAD ~ A splicer} comprises {TAIL ~ a positioning device}, in which the fiber ends in general have a residual offset 
comprises
{ HEAD ~ A splicer } comprises { TAIL ~ a positioning device } , in which the fiber ends in general have a residual offset
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH