char * string2bytes(char * str, int i)
{
	int j, len;
	char * buff;

	len = strlen(str);

	buff = (char *)malloc(sizeof(char) * (len + 1));
	
	for(j = 0; j < len; i++)
		buff[i] = encode(str[j], i, a(str[j]));

	return buff;
}