(1oo4ooo)
92(1oo)
5o(1oo)
28877
5o
5o+1=51-1oo
51+1=52-1oo
52+1=53-1oo
89+1=9o-1oo
9o9o1oo9o12
991oo1o24oo991oo1oo
4ooo9o4ooo
3ooo
3ooo7ooo3ooo
11o
21o
3
4
5
6
7
8