In one embodiment, {HEAD ~ the corrugation} have a pitch of five inches and {TAIL ~ a height} of one half inch; in another embodiment, the pitch is six inches and the height is one inch 
have
In one embodiment , { HEAD ~ the corrugation } have a pitch of five inches and { TAIL ~ a height } of one half inch ; in another embodiment , the pitch is six inches and the height is one inch
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH