toplevel "A";"A" and "B" "C";"B" lambda=1;"C" lambda=1;"F1" fdep "O" "B";"F2" fdep "O" "C";"O" or "S" "T";"S" or "T" "D";"T" or "E";"D" lambda=2;"E" lambda=4;
toplevel "A";
"A" and "B" "C";
"B" lambda=1;
"C" lambda=1;
"F1" fdep "O" "B";
"F2" fdep "O" "C";
"O" or "S" "T";
"S" or "T" "D";
"T" or "E";
"D" lambda=2;
"E" lambda=4;