no "by"

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{{Banned user}}
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by arbcom (no banner)

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{{Banned user|by=the Arbitration Committee}}
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by the community

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{{Banned user|by=the community}}
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{{Banned user}}{{Banned user/sandbox}}

by the community, for a set period of time

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{{Banned user|by=the community |time=one year}}
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{{Banned user}}{{Banned user/sandbox}}

by the Wikimedia Foundation (English Wikipedia only)

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{{Banned user|by=WMF}}
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In the block notice

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{{Banned user|link=[[WP:BANPOL|ban decision]] |userpage=no}}
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{{Banned user}}{{Banned user/sandbox}}