pi |- D: pidec | pi -U- pi |- U: theta |
pi |- begin D in U end: theta |
pi |- D: pidec | pi -U- pi |- D: pidec |
pi |- begin D in D end: pidec |
pi |- D: pidec | pi -U- pi |- T: deltaclass |
pi |- begin D in T end: deltaclass |
pi |- D: pidec | pi -U- pi |- C: comm |
pi |- begin D in C end: comm |
pi |- D: pidec | pi -U- pi |- E: tauexp |
pi |- begin D in E end: tauexp |