The only part of the bicycle 12 shown in FIG 1 is the rear part, including a saddle 28 mounted on a seatpost 29, which is typically telescopically inserted in {HEAD ~ the upper end} of {TAIL ~ a seat tube} 31 that constitutes part of the frame 32 of the bicycle 
The only part of the bicycle 12 shown in FIG 1 is the rear part , including a saddle 28 mounted on a seatpost 29 , which is typically telescopically inserted in { HEAD ~ the upper end } of { TAIL ~ a seat tube } 31 that constitutes part of the frame 32 of the bicycle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD 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