Crystal Reports Break down the values

Message

   Hi All,

I really need help on this problem:

On of My Table called Day. It's indicate:

1   = Sun
2   = Mon
3   = Sun, Mon
4   = Tue
5   = Sun, Tue
6   = Mon, Tue
7   = Sun, Mon, Tue
8   = Wed
9   = Sun, Wed
10 = Mon, Wed
11 = Sun, Mon, Wed
12 = Tue, Wed
13 = Sun, Tue, Wed
14 = Mon, Tue, Wed
15 = Sun, Mon, Tue, Wed
16 = Thu
.
.
.
32 = Fri
64 = Sat

I want to make a report that list all the days that occured. For example, I have to attend training on every:

 Day                         Time   
   1                           10:00
   3                           09:00
  15                          11:00

Expected output: 

 Day                         Time   
 Sun                       10:00 -----> 1 = Sun
 Sun                       09:00  -----> 3 = Sun, Mon

 Sun                       11:00  -----> 15 = Sun, Mon, Tue, Wed  
 Mon                       09:00  -----> 3 = Sun, Mon

 Mon                       11:00 -----> 15 = Sun, Mon, Tue, Wed  

 Tue                        11:00 -----> 15 = Sun, Mon, Tue, Wed  

 Wed                      11:00 -----> 15 = Sun, Mon, Tue, Wed  

I'd try to use subreport (7 subreport per days), but it really takes time to view the output.

Please help...

Cheers