The following are briefs for prefixes: (Note: When d-defining, don’t forget to define the briefs with the format symbol for prefixes.)
{Prefix}for= FAUR
{Prefix}gastric= SGRIK
{Prefix}gastro= SGROE
{Prefix}hydro= HAOIRD
{Prefix}hyper= HAOIRP
{Prefix}hypo= HOIP
{Prefix}im= KB-
{Prefix}inter= INT
{Prefix}intra= SBRA
{Prefix}iso= OIS
{Prefix}Mc= M*K
{Prefix}mega= MAEG