Edge cases are important here. Your example has word lists all of the same length. In that the case with your real data as well? If not, can you have the following two lists: 
    @list1 = qw [Truck Car];
    @list2 = qw [Truck Car Byke];

[download]
If you can, how must the resulting structure look time?

In reply to Re: trees of word lists by JavaFan
in thread trees of word lists by citromatik

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