#include<stdio.h>
#include<string.h>
int main()
{	
	int i,j,n1,n2,n3;
	char b[40][40];
	char a[100];
	gets(a);
	int len=strlen(a);

	n1=(len+2)/3;
	n3=n1;n2=len+2-2*n1;
	
	//初始化数组
		for (i=1;i<=n1;i++)
	{
		for(j=1;j<=n2;j++)
		{
			b[i][j]=' ';
		}
	}
	
	
	int count=0;
	for(i=1;i<=n1;i++)
	{
		b[i][1]=a[count++];
	}
	for(j=2;j<=n2;j++)
	{
		b[n1][j]=a[count++];
	}
	for(i=n1-1;i>=1;i--)
	{
		b[i][n2]=a[count++];
	}
	
	for (i=1;i<=n1;i++)
	{
		for(j=1;j<=n2;j++)
		{
			printf("%c",b[i][j]);
		}
		printf("\n");
	}
	
	return 0;
}