KAMIL ... stuck at 57

Another challenge problem at SPOJ - KAMIL
interesting one, easy to figure out, but what the heck, write shortest code!
with C i could get 127 bytes code :(
Come Ruby into picture and poof! we got 57!

10.times do
s=gets
p=1
s.gsub(/[DTFL]/){p*=2}
puts p
end

looking forward for more compression... ;)