Multiple Options Cell Values Based On Multiple Criteria Variable Inputs?

I maintain the data flow at my work. We send and receive the data using excel files with specific formatting that I then upload to the database. Each time I send or receive the excel file I must log them, this is what my code question refers to.

I use RDBMerge to merge all the contents of the 100 plus excel files into one worksheet. The first part of the macro cleans up the merge data for use in the log (i have attached an example of the clean data and finished log).

The blue shaded area of the "Raw_Data" is what the clean data looks like, the yellow column is what current macro records for each record.

As you can see by the example the Raw_Data is only two files LL_LLL_BOB_ToLLLLL_20121228_01 & LL_LLL_BOB_ToLLLLL_20121230_01, each with more that one record.

The log code in column "H" Is based on this criteria:
First Letter of the Unique ID in column "E" - O, M, or L
Program Type in Column "F" - U or R
1. O-U = U
2. O-R = RU
3. M-U = U2
4. M-R = R2U
5. L-R = R

You will note that Columns G-R of the "Log Sheet" correspond to the "Record Type" found in Column "G" of the "Raw_Data" sheet.

This is the area where my skill at using scripting dictionaries fails.

The results for the log list each file only once, but the log code for each corresponding "Record Type" in columns G-R of the "Log Sheet" must contain each unique instance of the code. In other words

if LL_LLL_BOB_ToLLLLL_20121228_01 contains an O-U with an "A" Record Type and an M-R with an "A" Record Type; then, on the log sheet there needs to be the codes "U/R2U" in the cell intersection of the LL_LLL_BOB_ToLLLLL_20121228_01 record row and "A" column (which is column "G")

So, If the File contains one of each code for each Record Type the corresponding cell must house one of each code separated by a "/" without any spaces. This means the cell value could no code, or one code and all the variations in between to all five codes. Also, for ease of human reading the log codes should be concatenated in the 1-5 order that I listed them in (U/RU/U2/R2U/R)

Here is my code so far.

VB:
Option Explicit
Sub test()
Dim dic As Object, a, i As Long, rng As Range, e, w, n As Long
Set dic = CreateObject("Scripting.Dictionary")

[Code].....