That's not possible for your example string, is it?

I don't see why not?

If a->1, b->2, c->3, d->4, e->1, f->2, g->3, h->4, every other i->1|2, every other j->3|4; that'd would 25 each of 1, 2, 3 & 4.

Which I guess indicates a laborious way to do it:

chhbfbjjjcgaiiaachbaefeabcbjffdgaggbgccaihgjddedfheejdigcdeiacebdehfig
+egifibdabhfdihbdhifcgjfjhcaejj
3442223433311211342112112324224313323331143344142411442334111312414223
+131222412424142442233324431134
           11 11   11 11        1      11     1   11      111 1  1    
+1 1    1    1             11   25
   222       2    2  2  2 2 22     2            2     2        2   22 
+   222  2 2   2  22   2        25
3     3 333     3        3     3 33 333   33           33    3       3
+ 3                 333   3  3  25
 44    4         4         4  4          4  44 4 4  44   4      4 4   
+      4  4 4 4 44      44    4 25

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In reply to Re^2: mapping 10 -> 4 equally. by BrowserUk
in thread mapping 10 -> 4 equally. by BrowserUk

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