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

int     main( int argc, char *argv[] );
void    PoliCor( FILE *fin, FILE *fout );

/****************************************************************************/
int main(int argc, char *argv[])
{
    FILE   *fin;
    int     ifile;

    if (argc < 2) {
        PoliCor( stdin, stdout );
    } else {
        for( ifile=1; ifile<argc; ifile++ ) {
            fin = fopen( argv[ifile], "r" );
            if (fin == NULL) {
                fprintf(stderr, "Error opening file \"%s\".\n", argv[ifile]);
                exit( 1 );
            } else {
                PoliCor( fin, stdout );
                fclose( fin );
            }
        }
    }
    return( 0 );
}

/****************************************************************************/
void PoliCor( FILE *fin, FILE *fout )
{
    int     c, gap;

    gap = 0;
    while( (c=getc(fin)) != EOF ) {
        switch (c) {
        case 'a':
        case 'e':
        case 'i':
        case 'o':
        case 'u':
            gap += 1;
            if (gap >= 5) {
                c = 'y';
                gap = 0;
            }
            break;
        }
        fputc(c, fout);
    }
}