How many main islands does Japan have?
5
3
3
3
5
3
5
4
3
5
4
3
2
5
4
3
2
5
4
3
2
5
4
3
2
5
4
3
2
5
4
6
3
2
5
4
6
3
2
5
4
6
1
3
2
5
4
7
6
1
3
2
5
4
7
6
1
3
2
5
4
7
6
1
3
2
5
4
7
6
1
3
2
5
8
4
7
6
1
3
2
5
8
4
7
6
1
3
2
5
8
4
7
6
1
3
2
5
8
4
7
6
1
2
9
5
8
4
7
6
1
2
11
9
5
8
4
7
6
1
10
2
11
9
8
4
7
6
1
10
2
11
9
8
7
6
1
10
12
2
11
9
8
7
6
1
10
12
11
9
8
7
6
1
10
12
11
9
8
7
6
1
10
12
13
11
0
9
8
7
6
1
10
12
13
11
9
8
7
0
6
1
10
12
13
11
9
8
7
1
144
0
62
66
132
144
0
127
169
62
66