SQL & PL/SQL :: Create Complete Hierarchical Table From Table With Only Two Columns - Parent And Child

We have a table in the client database that has two columns - column parent and column child. The whole hierarchy of DB table dependencies is held in this table.If Report 1 is dependent on Table A and Table A in turn is dependent on two tables Table M and Table N. Table N is dependent on table Z it will appear in the db table as,

Hierarchy Table
Parent Child
Report1Table A
Table ATable M
Table ATable N
Table NTable Z

Requirement :

From the above structure, we need to build a table which will hold the complete hierarchy by breaking it into multiple columns.The o/p should look like this

-ParentChild 1Child 2 Child 3
-Report1Table ATable M
-Report1Table ATable N Table Z

Child 1, Child 2, Child 3 ....and so on are columns.The number of tables and the no of hierarchical relationships are dynamic.

SQL Statements to create hierarchy table:

create table hierarchy (parent varchar2(20), child varchar2(20));
insert into hierarchy values ('Report1','Table A');
insert into hierarchy values ('Report1','Table B');
insert into hierarchy values ('Table A','Table M');
insert into hierarchy values ('Table B','Table N');
insert into hierarchy values ('Report2','Table P');
insert into hierarchy values ('Table M','Table X');
insert into hierarchy values ('Table N','Table Y');
insert into hierarchy values ('Report X','Table Z');

Approached already tried :

1) Using indentation : select lpad(' ',20*(level-1)) || to_char(child) P from hierarchy connect_by start with parent='Report1' connect by prior child=parent;

2)Using connect by path function :
select *
from (select parent,child,level,connect_by_isleaf as leaf, sys_connect_by_path(child,'/') as path
from hierarchy start with parent='Report1'
connect by prior child =parent) a where Leaf not in (0);

Both the approaches give the information but the hierarchy data appears in a single column.Ideally we would like data at each level to appear in a different column.