CPSの利用(4)

一回毎にトップレベルに戻る(2)
    gosh> (next)
    Match 1
    #t
    gosh> (next)
    Match 3
    #t
    gosh> (next)
    Match 5
    #t
    gosh> (next)
    Result (1 3 5)
    #f