1958
1
2
3
1.
(1)
(2)
(3)
20 30
50
2.
1
2
3
4
1.
(1)
(3)
1
2
3
(3)
1
2
3
2.
3.
1.
(1)
(2)
(3)
2.
1
2
3
1.
2.
3.
4.
1.
(1)
(2)
(3)
(4)
2
1
1 2
3 4
5 6
7
2
1
2
3
4
2
3000
3000
1
2
3
4
5
1
2
3
4
5 BOT
BOT Build Operate
Transfer
BOT
6 ABS
ABS A sset Backed Securities
ABS
ABS
