toplevel "A";"A" and "C" "D";"X" seq "B" "C" "D";"B" lambda=0.5 dorm=0.3;"C" lambda=0.5 dorm=0.3;"D" lambda=0.5 dorm=0.3;
toplevel "A";
"A" and "C" "D";
"X" seq "B" "C" "D";
"B" lambda=0.5 dorm=0.3;
"C" lambda=0.5 dorm=0.3;
"D" lambda=0.5 dorm=0.3;