C :: How To Print All The Words In A Trie

I am creating a trie (not a tree but a trie). I have the following structure:

Code:
struct tnode {
bool is_word;
list *children;
};
struct trie {
int length;
struct tnode *first;
};

list *children is a linked list that contain pointers to tnodes. For example: I have a trie with the words cup and cut:

c
u
/
p t

Given the example above you have the following linked lists:

1. [c] that contains a pointer to linked list 2.

2. [u] that contains a pointer to linked list 3.

3. [p, t]

Now I want to print the trie like:

cut
cup