SQL & PL/SQL

Hello,

I have a set of hierarchical data and I am trying to traverse through this using START WITH - CONNECT BY clause. This traversal is happening in Depth-First pattern. But I need the output in Breadth-First. I searched on this forum and found that using WITH clause, this can be achieved. I tried but still unclear on the approach. Can someone help me.

Input Table
FROM - TO
11 - 22
22 - 33
33 - 44
33 - 55
44 - 66
55 - 66
66 - 77
77 - 88

Query Used
SELECT to_element, max(rownum) order_position
FROM (SELECT from_element,to_element
FROM input_table
)tab
START WITH tab.from_element = 11
CONNECT BY PRIOR tab.to_element = tab.from_element
GROUP BY to_element
ORDER BY 2;

CURRENT OUTPUT
TO_ELEMENT - ORDER_POSITION
22 - 1
33 - 2
44 - 3
55 - 7
66 - 8
77 - 9
88 - 10


EXPECTED OUTPUT WITH BREADTH SEARCH
TO_ELEMENT - ORDER_POSITION
22 - 1
33 - 2
44 - 3
55 - 4
66 - 5
77 - 6
88 - 7

Any help in this regards will be really helpful.

Regards,
Nitin.