Insert time: 1
0 99991 99992
99990 99991 0
99992 99993 0
99993 99990 0
===================
Insert time: 2
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
99991 99992 1
99992 99993 1
===================
Insert time: 3
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
2 99993 1
99991 99992 2
99992 99993 2
1 99991 2
===================
Insert time: 4
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
2 3 1
99991 99992 3
1 99991 2
99992 99993 3
99993 1 3
2 99991 3
===================
Insert time: 5
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
2 3 1
1 99991 2
4 99993 3
99993 1 3
2 99991 4
99991 99992 4
99992 99993 4
3 2 4
===================
Insert time: 6
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
2 3 1
1 99991 2
4 99993 3
99993 1 3
2 99991 5
99992 99993 4
3 2 4
99991 99992 5
99992 4 5
4 2 5
===================
Insert time: 7
99990 99991 1
1 99993 0
99993 99990 0
0 99990 1
2 3 1
1 99991 2
4 99993 3
99993 1 3
2 99991 5
99992 99993 4
3 2 4
6 4 5
4 2 5
99991 99992 6
99992 4 6
5 99991 6
===================