Polega to na tym, że wyznaczamy przedział czasowy.
http://forum.animogen.com/viewtopic.php?f=9&t=1584384
http://www.lclcargo.com.au/forum.php?mod=viewthread&tid=2727&pid=3199&page=1&extra=#pid3199
http://foro.goatenerife.es/viewtopic.php?f=15&t=20254
http://myweed.rocks/viewtopic.php?t=86617
https://talkingpoints.org/subx/showthread.php?tid=64334
https://wietmarkt.nl/viewtopic.php?t=9221
http://www.lada-xray.net/showthread.php?p=305506#post305506
http://www.lada-xray.net/showthread.php?p=211253#post211253
http://foro.goatenerife.es/viewtopic.php?f=15&t=20603
https://www.ww2.site/forum/viewtopic.php?t=370585
http://myweed.rocks/viewtopic.php?t=51448
https://wietmarkt.nl/viewtopic.php?t=720951
http://oldsite.giessen46ers.de/fantalk/viewtopic.php?f=1&t=219607
https://planeswalkers.org/viewtopic.php?t=78172
http://miweii.com/forum.php?mod=viewthread&tid=48297&extra=
http://foro.goatenerife.es/viewtopic.php?f=29&t=21300
http://miweii.com/forum.php?mod=viewthread&tid=61518&extra=
http://1.s.2.free.fr/viewtopic.php?f=18&t=602442
https://muchroom.ng/index.php?topic=73191.new#new