1.100: C0 arrived [ ]
1.100: C0 service begin (by S0)
1.200: C1 arrived [ ]
1.200: C1 joined queue [ ]
1.300: C2 arrived [ C1 ]
1.300: C2 joined queue [ C1 ]
1.400: C3 arrived [ C1 C2 ]
1.400: C3 joined queue [ C1 C2 ]
3.100: C0 service done (by S0)
3.100: C0 departed
3.100: C1 service begin (by S0)
4.000: C4 arrived [ C2 C3 ]
4.000: C4 joined queue [ C2 C3 ]
5.000: C5 arrived [ C2 C3 C4 ]
5.000: C5 departed
5.100: C1 service done (by S0)
5.100: C1 departed
5.100: C2 service begin (by S0)
7.100: C2 service done (by S0)
7.100: C2 departed
7.100: C3 service begin (by S0)
9.100: C3 service done (by S0)
9.100: C3 departed
9.100: C4 service begin (by S0)
11.100: C4 service done (by S0)
11.100: C4 departed