Finding Consecutive Records

[sc5502]

There is a MS SQL Server table that has a Supplier Rating score in it. I have simplified it a bit. Here is how it is defined in SQL:

Column Name   Data Type
-----------   ---------------
id            int 
supplier      varchar(100)
fy            varchar(2)
qtr           varchar(1)
score         int

The data is as follows:

id  supplier          fy  qtr   score
--- --------------    --  ---   -----
100 Doe Supply Co.    30  1     80
101 Smart Supply      30  1     100
102 Smart Supply      30  2     79
103 Doe Supply Co.    30  2     79 
104 Smart Supply      30  3     76
105 Doe Supply Co     30  3     70
106 Smart Supply      30  4     78 
107 Doe Supply        30  4     65

What I am wanting to do is write a SQL query that will find 2 consecutive table entries by supplier, FY and QTR whose scores are below 80. Here is what I want to see:

id  supplier          fy  qtr   score
--- --------------    --  ---   -----
103 Doe Supply Co.    30  2     79
105 Doe Supply Co     30  3     70
103 Smart Supply      30  2     70
104 Smart Supply      30  3     76

I can write queries to read and update SQL but haven't a clue on how to do this.
Thanks in advance.