SQL & PL/SQL :: Analytic Function To Get Count Based On Special Criteria?

I have the following query with analytic function but wrong results on the last column COUNT.

1)I am getting the output order by b.sequence_no column . This is a must.
2)COUNT Column :

I don't want the total count based on thor column hence there is no point in grouping by that column. The actual requirement to achieve COUNT is:

2a -If in the next row, if either the THOR and LOC combination changes to a new value, then COUNT=1
(In other words, if it is different from the following row)

2b-If the values of THOR and LOC repeats in the following row, then the count should be the total of all those same value rows until the rows become different.
(In this case 2b-WHERE THE ROWS ARE SAME- also I only want to show these same rows only once. This is shown in the "MY REQUIRED OUTPUT) .

My present query:
select r.name REGION ,
p.name PT,
do.name DELOFF,
ro.name ROUTE,

[code]...

My incorrect output[PART OF DATA]:Quote:
REGIONPT DELOFF ROUTE THOR LOC SEQ COUNT
NAASNAAS MAYNOOTHMAYNOOTHR010 DUBLINRD CEL 1 1
NAASNAAS MAYNOOTHMAYNOOTHR010 NEWTOWNRD CEL 2 1

[code]...

My required output[PART OF DATA]-:Quote:
REGIONPT DELOFF ROUTE THOR LOC COUNT
NAASNAAS MAYNOOTHMAYNOOTHR010 DUBLINRD CEL 1
NAASNAAS MAYNOOTHMAYNOOTHR010 NEWTOWNRD CEL 1
NAASNAAS MAYNOOTHMAYNOOTHR010 PRIMHILL CEL 1

[code]...

NOTE :Count as 1 is correctly coming.But where there is same rows and I want to take the total count on them, I am not getting.