INSERT INTO person VALUES ( 1, 'Al' );
INSERT INTO person VALUES ( 2, 'Bob' );
INSERT INTO person VALUES ( 3, 'Chuck' );
INSERT INTO person VALUES ( 4, 'Doug' );
INSERT INTO person VALUES ( 5, 'Ed' );
INSERT INTO person VALUES ( 6, 'Frank' );
INSERT INTO person VALUES ( 7, 'Gary' );
INSERT INTO person VALUES ( 8, 'Hamza' );
INSERT INTO person VALUES ( 9, 'Ibrahim' );
INSERT INTO friend VALUES ( 1, 2 );
INSERT INTO friend VALUES ( 1, 3 );
INSERT INTO friend VALUES ( 1, 6 );
INSERT INTO friend VALUES ( 1, 9 );
INSERT INTO friend VALUES ( 2, 1 );
INSERT INTO friend VALUES ( 2, 4 );
INSERT INTO friend VALUES ( 2, 7 );
INSERT INTO friend VALUES ( 3, 1 );
INSERT INTO friend VALUES ( 3, 4 );
INSERT INTO friend VALUES ( 3, 5 );
INSERT INTO friend VALUES ( 3, 6 );
INSERT INTO friend VALUES ( 4, 2 );
INSERT INTO friend VALUES ( 4, 3 );
INSERT INTO friend VALUES ( 4, 8 );
INSERT INTO friend VALUES ( 5, 3 );
INSERT INTO friend VALUES ( 6, 1 );
INSERT INTO friend VALUES ( 6, 3 );
INSERT INTO friend VALUES ( 7, 2 );
INSERT INTO friend VALUES ( 7, 8 );
INSERT INTO friend VALUES ( 7, 9 );
INSERT INTO friend VALUES ( 8, 4 );
INSERT INTO friend VALUES ( 8, 7 );
INSERT INTO friend VALUES ( 9, 1 );
INSERT INTO friend VALUES ( 9, 7 );