Listener ALREADY EXIST ….error 10g rac

Oracle RAC

solution:
my problem is solved as
i manually stopped and unregister the resources of all listeners as,

$./crs_stat -t -v
./crs_stop ora.rac1.LISTENER_RAC1.lsnr
./crs_stop ora.rac2.LISTENER_RAC2.lsnr

$crs_unregister ora.rac1.LISTENER_RAC1.lsnr
$crs_unregister ora.rac2.LISTENER_RAC2.lsnr
$crs_unregister ora.rac3.LISTENER_RAC3.lsnr

after unregistring and start netca this time when i am adding listener to all possible