The cyanoacrylate adhesive may be {TAIL ~ any} of {HEAD ~ the alkyl} substituted cyanoacrylates, preferably methylcyanoacrylate, ethylcyanoacrylate, isopropylcyanoacrylate or isobutylcyanoacrylate 
The cyanoacrylate adhesive may be { TAIL ~ any } of { HEAD ~ the alkyl } substituted cyanoacrylates , preferably methylcyanoacrylate , ethylcyanoacrylate , isopropylcyanoacrylate or isobutylcyanoacrylate
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH