select case

I need to do nested select case statement. I try to do, however it is not working. Please help
SELECT CASE freq_type
WHEN 1 THEN 'Once'
WHEN 4 THEN 'Daily'
WHEN 8 THEN 'Weekly'
ELSE 'N/A' END as [Frequency of the schedule execution],
[days the schedule runs]=
Case freq_type WHEN 4 then 'Daily'
WHEN 8 then
CASE freq_interval
WHEN '1' THEN 'Sunday'
WHEN '2' THEN 'Monday'
WHEN '4' THEN 'Tuesday'
WHEN '8' THEN 'Wednesday'
WHEN '16' THEN 'Thursday'
WHEN '32' THEN 'Friday'
WHEN '64' THEN 'Saturday'
ELSE 'N/A' END

WHEN 32 THEN
CASE freq_interval
WHEN '1' THEN 'Sunday'
WHEN '2' THEN 'Monday'
WHEN '3' THEN 'Tuesday'
WHEN '4' THEN 'Wednesday'
WHEN '5' THEN 'Thursday'
WHEN '6' THEN 'Friday'
WHEN '7' THEN 'Saturday'
WHEN '8' THEN 'Day'
WHEN '9' THEN 'Weekday'
WHEN '10' THEN 'Weekned Day'
END

END
FROM msdb..sysjobschedules a
JOIN msdb..sysjobs b
ON a.job_id=b.job_id

please define "not working"

returns the wrong rows? returns 0 rows? issues a syntax error? crashes the server?