x 1

1

x

1

=

1

2

x

1

=

2

3

x

1

=

3

4

x

1

=

4

5

x

1

=

5

6

x

1

=

6

7

x

1

=

7

8

x

1

=

8

9

x

1

=

9

10

x

1

=

10

11

x

1

=

11

12

x

1

12