Subtree Specification LL(1) Grammar

Here is the LL(1) grammar used to decode a subtreeSpecification as described by RFC 3672 

<SubtreeSpecification> ::= '{' <spse> <base-e> <chopSpecification> <spse> <refinement-e> '}'

<base-e> ::= 
	����base���� <sps> <localName> <spse> ',' <spse> | 
	e

<chopSpecification> ::= ����chopSpecification���� '{' <spse> <chopSpecification-in> '}'

<chopSpecification-in> ::= 
	����specificExclusions���� <spse> <chop-set-of-choice> <spse> <specificExclusions-follower> |
	����minimum���� <sps> <number> <spse> <minimum-follower> |
	����maximum���� <sps> <number> <spse>

<specificExclusions-follower> ::= 
	',' <spse> ����minimum���� <sps> <number> <spse> <minimum-follower> |
	',' <spse> ����maximum���� <sps> <number> <spse>

<minimum-follower> ::= ',' <spse> ����maximum���� <sps> <number> <spse>

<refinement-e> ::= 
        ����specificationFilter���� <sps> <refinement> | 
        e

<refinement> ::= 
	����item���� <spse> ':' <spse> OID <spse> |
	����and���� <spse> ':' <spse> <set-of-refinement> |
	����or���� <spse> ':' <spse> <set-of-refinement> |
	����not���� <spse> ':' <spse> <refinement> |

<set-of-refinement> ::= '{' <spse> <refinement> <refinements> '}' <spse>

<refinements> ::= 
        ',' <spse> <refinement> | 
        e

<localName> ::= '"' DN '"'