package main

import (
    "bufio"
    "fmt"
    "os"
    "strings"
)

type playfairOption int

const (
    noQ playfairOption = iota
    iEqualsJ
)

type playfair struct {
    keyword string
    pfo     playfairOption
    table   [5][5]byte
}

func (p *playfair) init() {