{HEAD ~ The list} of currently available media for providing such a ring cavity 202 include electrical cable, coaxial cable, {TAIL ~ reverberation lines}, delay lines, fiber optical cable and microwave cavities 
{ HEAD ~ The list } of currently available media for providing such a ring cavity 202 include electrical cable , coaxial cable , { TAIL ~ reverberation lines } , delay lines , fiber optical cable and microwave cavities
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH