toplevel "T";"T" or "B";"B" and "B1" "B2";"M" seq "C" "B";"B1" lambda=4 dorm=1;"B2" lambda=5 dorm=1;"C" lambda=0 dorm=1;
toplevel "T";
"T" or "B";
"B" and "B1" "B2";
"M" seq "C" "B";
"B1" lambda=4 dorm=1;
"B2" lambda=5 dorm=1;
"C" lambda=0 dorm=1;