................................................................................................ 62
...............................................................................................62
.............................................................................................. 65
................................................................................................ 67
...............................................................................................67
.............................................................................................. 69
................................................................................................ 70
............................................................................................... 71
longueur...................................................................... 73
...............................................................................................73
................................................................................................ 74
............................................................................................... 74
...............................................................................................76
6
.........................................................................................66
.........................................................................................69
......................................................................................... 73
......................................................................................... 78