toplevel "A";"A" and "B" "C";"F" fdep "B" "C";"B" lambda=0.5 dorm=0;"C" lambda=0.5 dorm=0;
toplevel "A";
"A" and "B" "C";
"F" fdep "B" "C";
"B" lambda=0.5 dorm=0;
"C" lambda=0.5 dorm=0;