wherein said {TAIL ~ irregular shaped substrates} are retained in said panel without breaking until said irregular shaped substrates are detached from {HEAD ~ said panel} 
wherein said { TAIL ~ irregular shaped substrates } are retained in said panel without breaking until said irregular shaped substrates are detached from { HEAD ~ said panel }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD