I love all these solutions!!!
Thank for you for such cool but compact discussions!
I did a check to see how I could get isograms for french so over a
dictionary of 300000 entities around 50000 are
and I got really surprised because stupily I was counting é, ê, e and è
as the same letter and well they are not (I remember
the points that I got removed during my french lecture because I
confused é and è).
So the french alphabet is around 42 if we count
à, â, é, è, ê, î, ï, ô, ù, û, ç, æ et œ (I never saw ü, ÿ, ë)
but this excellent to show some important points too....
a solution can be excellent if it matches well the requirements and some
solutions are more flexible than others.
Stef