1 | 1. E: TaggedEventStruct 2. P: (|E| List) Prop 3. I: (|E| List) Prop 4. J: (|E| List) Prop 5. K: (|E| List) Prop 6. R: (|E| List) (|E| List) Prop 7. tr_1,tr_2:|E| List. (tr_1 R tr_2)  ( m:Label. < tr_1 > _m R < tr_2 > _m) 8. tr_1,tr_2:|E| List. (tr_1 R tr_2)  (tr_2 R tr_1) 9. R preserves P 10. R preserves K 11. tr:|E| List. (I K)(tr)  ( tr':|E| List. I(tr') & J(tr') & (tr R tr')) 12. ((I J) K) fuses P (I K) fuses P |