PLACE p1, p2, p3, p4, p5; MARKING p1: 0, p2: 0, p3: 0, p4: 0, p5: 0; TRANSITION t1 CONSUME p1: 2, p2: 1; PRODUCE p1: 1; TRANSITION t2 CONSUME p2: 1, p4: 1; PRODUCE p1: 3; TRANSITION t3 CONSUME p2: 1; PRODUCE p5: 1; TRANSITION t4 CONSUME p5: 1; PRODUCE p2: 2, p4: 1; TRANSITION t5 CONSUME p3: 3, p4: 1; PRODUCE p3: 5;