#include <stdio.h>

int main( int argc, char *argv[] )
{
    int n;

    scanf( "%d", &n );

    switch( n % 10 ) {
        case 2:
        case 4:
        case 5:
        case 7:
        case 9:
            puts( "hon" ) ;
            break;
        case 0:
        case 1:
        case 6:
        case 8:
            puts( "pon" ) ;
            break;
        case 3:
            puts( "bon" ) ;
            break;
    }

    return( 0 );
}
