comma after 'etc.' [abbreviation]: strippers, bongs, etc., and guns
comma after 'i.e.' [abbreviation]: Laura, i.e. my sister ...
comma after 'Jr.' [why?, abbreviation]: Martin Luther King, Jr., was
comma after 'Jr.' before verb [abbreviation]: Joseph Biden Jr.,..
comma after abbreviation in quotes (AmE; quotation; phrase): "e.g.,"
comma and period after 'U.S.' [abbreviation]: with the U.S., and this
comma before and after 'i.e.' [abbreviation]: alternative, i.e.,...
comma or semicolon before 'i.e.' [abbreviation]: two elements; i.e.
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