$ perl -le'
my @a = qw( SystemMaj MemoryCrit ServerOkay MemoryOkay );
foreach my $v (@a) {
    my @x = split /(Crit|Maj|Okay)/, $v;
    print "1: $x[0]  2: $x[1]";
    }
'
1: System  2: Maj
1: Memory  2: Crit
1: Server  2: Okay
1: Memory  2: Okay