wherein said front end portions and front gap portions are in the front direction of the movement of the shoe while said rear end portions and rear gap portions are rearward respectively to said {HEAD ~ front face portions} and said {TAIL ~ front gap portions} 
wherein said front end portions and front gap portions are in the front direction of the movement of the shoe while said rear end portions and rear gap portions are rearward respectively to said { HEAD ~ front face portions } and said { TAIL ~ front gap portions }
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL