create table student (stuid number(6) primary key,name varchar2(30),mob varchar2(20));

insert into student (1,'abc','92333444444');
insert into student (2,'aac','92333004444');
insert into student (3,'avc','92333004444');
insert into student (4,'afc','92333233444');
insert into student (5,'atc','92333233444');
insert into student (6,'arc','92333444444');
insert into student (7,'aec','92333444444');
insert into student (8,'atc','92333123444');
insert into student (9,'arc','92332334444');
insert into student (10,'aec','92333444444');

i want to get the result as:

mob             Stuid
---------------------------------------------------
92333444444     (1,6,7,10)
92333004444     (2,3)
92332334444     (4,5,9)