How to covert bnf to ebnf from that !? bnf ::= DCd | DC

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感情败类 2021-01-20 01:07

How to covert bnf to ebnf from that !?

BNF

  ::= DCd | DC 

EBNF

 ::= D[}C[d]

or
 
 ::= D[C[d]]         


        
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