#include <stdio.h>
#include <assert.h>
#include <stdlib.h>

struct tree {
	char c;
	struct tree * left;
	struct tree * right;
};

void free_tree (struct tree * t)
{
	if (!t)
		return;
	free_tree (t->left);
	free_tree (t->right);
	free (t);
}

struct tree * read_tree ()
{
	char c;
	struct tree * t;
	int ret;
	ret = scanf ("%c", &c);
	assert (c == '(');
	ret = scanf ("%c", &c);
	assert (ret == 1);
	if (c == ')')
		return NULL;
	t = calloc (1, sizeof (struct tree));
	t->c = c;
	t->left = t->right = NULL;
	ret = (scanf ("%c", &c));
	assert (ret == 1);
	if (c == ')')
		return t;
	assert (c == ',');
	t->left = read_tree ();
	ret = (scanf ("%c", &c));
	assert (ret == 1);
	if (c == ')')
		return t;
	assert (c == ',');
	t->right = read_tree ();
	ret = scanf ("%c", &c);
	assert (ret == 1);
	assert (c == ')');
	return t;
}

void inorder (struct tree * t)
{
	if (!t)
		return;
	inorder (t->left);
	printf ("%c", t->c);
	inorder (t->right);
}

void postorder (struct tree * t)
{
	if (!t)
		return;
	postorder (t->left);
	postorder (t->right);
	printf ("%c", t->c);
}

int main ()
{
	struct tree * t;
	while (1) {
		scanf (" ");
		if (feof (stdin))
			break;
		t = read_tree ();
		inorder (t); printf ("\n");
		postorder (t); printf ("\n");
		free_tree (t);
	}
	return 0;
}