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

int main(int argc, char **argv)
{
   int i,j,max;
   int *lengths;

   if (argc > 1) {
      // space on the heap to store the lengths of all the input arguments
      lengths = (int *) malloc( (argc-1) * sizeof(int) );

      // compute the lengths of all the arguments and remember the maximum
      for (i=1; i < argc; i++) {
         lengths[i-1] = strlen(argv[i]);
         if (lengths[i-1] > max)
            max = lengths[i-1];
      }

      // print all the letters
      for (j=0; j < max; j++) {
         for (i=1; i < argc; i++) {
            if (j <= lengths[i-1])
               printf("%c ", argv[i][j]);
            else
               printf("  ");
         }
         printf("\n");
      }
   }

   return 0;
}