From: A comparison of conditional random fields and structured support vector machines for chemical entity recognition in biomedical literature
prefixes
alk, meth, eth, prop, but, pent, hex, hept, oct, non, dec, undec, dodec, eifcos, di, tri, tetra, penta, hexa, hepta
suffixes
ane, ene, yne, yl, ol, al, oic, one, ate, amine, amide