.

7777774

774

8

88

888

8888

88888

888888

8888888

88888888

888885

8888888885

9

99

999

9999

99999

999999

9999999

999999999

999999996

6969

0

00

000

0000

00000

000000

0000000

00000000

000000000

000000000000

0000000007

00007

00000777

00000000777

07700

1

11

111