unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Memo3: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  mm:integer;
  nn:integer;
  tmp:string;     
begin
  mm:=memo1.Lines.Count;
  for nn:=0 to mm do begin
    tmp:=copy(memo1.Lines.Strings[nn], 1, pos(';', memo1.Lines.Strings[nn])-1);
    memo2.Lines.Add(tmp);
    tmp:=copy(memo1.Lines.Strings[nn], pos(';', memo1.Lines.Strings[nn])+1, length(memo1.Lines.Strings[nn]));
    memo3.Lines.Add(tmp);
  end;
end;

end.