Counting the occurences an item shows up in multiple fields

Hi. I have a table that is structured as the following:
TestRecord
User1
User2
User 3

so the data looks like this
Pass     UserA     UserB     UserC
Pass     UserB     UserC     Null
Fail        UserA     UserB     Null
Pass     UserA     UserB     Null
Pass     UserC     UserA     Null
Pass     UserB     UserA     UserC

Any ideas on how to write a sql statement that will count the number of occurences a specific user shows up in a record.
So....
UserA     5
User B    5
USer C    4

I am not even sure where to start or of this is possible.