void llmrg(struct llist *dest, struct llist *src1, struct llist *src2) {
    struct llnode
        *node1 = src1->front,
        *node2 = src2->front,
        *current = NULL;

    while( (node1!=NULL) || (node2!=NULL) ) {
        struct llnode *next = NULL;

        if( (node1!=NULL) && ( node1->item <= node2.item ) {
            next=node1;
            node1=node1->next;

        }else{
            next=node2;
            node2=node2->next;
            next->next = NULL;
        }

        if(current!=NULL) {
            current->next = next;
        }

        current = next;
        current->next = NULL;

        if(dest->front == NULL) {
            dest->front = current;
        }
    }
}