//PAT_A 1031
#include<cstdio>
#include<cstring>
int main() {
	char str[100];
	scanf("%s", str);
	int N = strlen(str);
	int n1 = (N + 2) / 3, n3 = n1, n2 = N + 2 - n1 - n3;
	for (int i = 0; i < n1 - 1; i++) {
		printf("%c", str[i]);
		for (int j = 0; j < n2 - 2; j++)printf(" ");
		printf("%c\n", str[N - 1 - i]);
	}
	for (int i = 0; i < n2; i++) {
		printf("%c",str[n1 + i - 1]);
	}
	return 0;
}