Bębny to kolumny w automacie, na których pojawiają się symbole.
http://myweed.rocks/viewtopic.php?t=86804
https://mliia.com/thread-351621-1-1.html
http://miweii.com/forum.php?mod=viewthread&tid=44770&extra=
http://www.horsecity.ru/phpBB3/viewtopic.php?f=22&t=395854
https://forum.zweb-apps.xyz/viewtopic.php?t=47010
http://1.s.2.free.fr/viewtopic.php?f=2&t=342212
http://vortex.mx.free.fr/forum/viewtopic.php?f=38&t=2430&sid=7ee13aa2962ee3fba1507b31866c1003
https://forum.zweb-apps.xyz/viewtopic.php?t=16277
http://biopharmamash.com/viewtopic.php?t=1939976
http://mirosovak.edoras.cz/viewtopic.php?f=3&t=120117
http://47.88.101.141/forum.php?mod=viewthread&tid=311191&extra=
https://foro.murenacidos.com/showthread.php?tid=16109
https://talkingpoints.org/subx/showthread.php?tid=51645
https://forum.zweb-apps.xyz/viewtopic.php?t=57994
https://forum.zweb-apps.xyz/viewtopic.php?t=17019
http://www.lada-xray.net/showthread.php?p=123879#post123879