{HEAD ~ Each} of {TAIL ~ the shaft slots} 47 c is formed in a respective slide wing 47 b at an incline of 45° 
of
{ HEAD ~ Each } of { TAIL ~ the shaft slots } 47 c is formed in a respective slide wing 47 b at an incline of 45 °
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 OTH OTH OTH OTH OTH