It should first be confirmed that %1 refers to the number of blocks to be deleted (and not to some other adjective such as a colour or other category) and this should be documented.
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You can view and copy the source of this page.Shirayuki (talk)
That it's 2 or more does not negate the need for PLURAL support. There are languages (the Slavic family comes to mind) with singular, dual and plural forms, where plural is 3 or more.