How do I group rows hierarchical (1, 1.1, 1.1.2 ...)

I need a macro to group rows in 6 hierarchical levels like:

1
1.1
1.1.1
1.1.1.1
1.1.1.1.1
1.1.1.1.1.1
1.1.1.1.1.2
1.1.1.1.1.3
1.1.2
1.1.2.1
1.1.2.1.1
1.1.2.1.1.1
1.1.2.1.1.2

All my attempts didn't work really.
Any suggestions or tips are appreciated.

Thanks in anticipation.
jugeh

Please Excel experts I ugently need some help.
This is what I tried but the Code works up to the third level only.

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