Terminals which are not used:

   ERROR



Grammar
rule 1    result ->		/* empty */
rule 2    result -> error
rule 3    result -> date_type
rule 4    result -> diff_type
rule 5    @1 ->		/* empty */
rule 6    diff_type -> date_type MINUS @1 date_type
rule 7    date_type -> date
rule 8    date_type -> date_type NUMBER UNIT
rule 9    date_type -> date_type NUMBER DAY
rule 10   date -> TODAY
rule 11   date -> MONTH NUMBER
rule 12   date -> MONTH NUMBER PUNC NUMBER
rule 13   date -> NUMBER PUNC NUMBER
rule 14   date -> NUMBER PUNC NUMBER PUNC NUMBER
rule 15   date -> DAY
rule 16   date -> MONTH NUMBER DAY
rule 17   date -> NUMBER NUMBER DAY
rule 18   date -> JULIAN

Terminals, with rules where they appear

$ (-1)
error (256) 2
MONTH (257) 11 12 16
DAY (258) 9 15 16 17
NUMBER (259) 8 9 11 12 13 14 16 17
UNIT (260) 8
PUNC (261) 12 13 14
MINUS (262) 6
TODAY (263) 10
ERROR (264)
JULIAN (265) 18

Nonterminals, with rules where they appear

result (12)
    on left: 1 2 3 4
diff_type (13)
    on left: 6, on right: 4
@1 (14)
    on left: 5, on right: 6
date_type (15)
    on left: 7 8 9, on right: 3 6 8 9
date (16)
    on left: 10 11 12 13 14 15 16 17 18, on right: 7


state 0

    error	shift, and go to state 1
    MONTH	shift, and go to state 2
    DAY 	shift, and go to state 3
    NUMBER	shift, and go to state 4
    TODAY	shift, and go to state 5
    JULIAN	shift, and go to state 6

    $   	reduce using rule 1 (result)

    result	go to state 26
    diff_type	go to state 7
    date_type	go to state 8
    date	go to state 9



state 1

    result  ->  error .   (rule 2)

    $default	reduce using rule 2 (result)



state 2

    date  ->  MONTH . NUMBER   (rule 11)
    date  ->  MONTH . NUMBER PUNC NUMBER   (rule 12)
    date  ->  MONTH . NUMBER DAY   (rule 16)

    NUMBER	shift, and go to state 10



state 3

    date  ->  DAY .   (rule 15)

    $default	reduce using rule 15 (date)



state 4

    date  ->  NUMBER . PUNC NUMBER   (rule 13)
    date  ->  NUMBER . PUNC NUMBER PUNC NUMBER   (rule 14)
    date  ->  NUMBER . NUMBER DAY   (rule 17)

    NUMBER	shift, and go to state 11
    PUNC	shift, and go to state 12



state 5

    date  ->  TODAY .   (rule 10)

    $default	reduce using rule 10 (date)



state 6

    date  ->  JULIAN .   (rule 18)

    $default	reduce using rule 18 (date)



state 7

    result  ->  diff_type .   (rule 4)

    $default	reduce using rule 4 (result)



state 8

    result  ->  date_type .   (rule 3)
    diff_type  ->  date_type . MINUS @1 date_type   (rule 6)
    date_type  ->  date_type . NUMBER UNIT   (rule 8)
    date_type  ->  date_type . NUMBER DAY   (rule 9)

    NUMBER	shift, and go to state 13
    MINUS	shift, and go to state 14

    $default	reduce using rule 3 (result)



state 9

    date_type  ->  date .   (rule 7)

    $default	reduce using rule 7 (date_type)



state 10

    date  ->  MONTH NUMBER .   (rule 11)
    date  ->  MONTH NUMBER . PUNC NUMBER   (rule 12)
    date  ->  MONTH NUMBER . DAY   (rule 16)

    DAY 	shift, and go to state 15
    PUNC	shift, and go to state 16

    $default	reduce using rule 11 (date)



state 11

    date  ->  NUMBER NUMBER . DAY   (rule 17)

    DAY 	shift, and go to state 17



state 12

    date  ->  NUMBER PUNC . NUMBER   (rule 13)
    date  ->  NUMBER PUNC . NUMBER PUNC NUMBER   (rule 14)

    NUMBER	shift, and go to state 18



state 13

    date_type  ->  date_type NUMBER . UNIT   (rule 8)
    date_type  ->  date_type NUMBER . DAY   (rule 9)

    DAY 	shift, and go to state 19
    UNIT	shift, and go to state 20



state 14

    diff_type  ->  date_type MINUS . @1 date_type   (rule 6)

    $default	reduce using rule 5 (@1)

    @1  	go to state 21



state 15

    date  ->  MONTH NUMBER DAY .   (rule 16)

    $default	reduce using rule 16 (date)



state 16

    date  ->  MONTH NUMBER PUNC . NUMBER   (rule 12)

    NUMBER	shift, and go to state 22



state 17

    date  ->  NUMBER NUMBER DAY .   (rule 17)

    $default	reduce using rule 17 (date)



state 18

    date  ->  NUMBER PUNC NUMBER .   (rule 13)
    date  ->  NUMBER PUNC NUMBER . PUNC NUMBER   (rule 14)

    PUNC	shift, and go to state 23

    $default	reduce using rule 13 (date)



state 19

    date_type  ->  date_type NUMBER DAY .   (rule 9)

    $default	reduce using rule 9 (date_type)



state 20

    date_type  ->  date_type NUMBER UNIT .   (rule 8)

    $default	reduce using rule 8 (date_type)



state 21

    diff_type  ->  date_type MINUS @1 . date_type   (rule 6)

    MONTH	shift, and go to state 2
    DAY 	shift, and go to state 3
    NUMBER	shift, and go to state 4
    TODAY	shift, and go to state 5
    JULIAN	shift, and go to state 6

    date_type	go to state 24
    date	go to state 9



state 22

    date  ->  MONTH NUMBER PUNC NUMBER .   (rule 12)

    $default	reduce using rule 12 (date)



state 23

    date  ->  NUMBER PUNC NUMBER PUNC . NUMBER   (rule 14)

    NUMBER	shift, and go to state 25



state 24

    diff_type  ->  date_type MINUS @1 date_type .   (rule 6)
    date_type  ->  date_type . NUMBER UNIT   (rule 8)
    date_type  ->  date_type . NUMBER DAY   (rule 9)

    NUMBER	shift, and go to state 13

    $default	reduce using rule 6 (diff_type)



state 25

    date  ->  NUMBER PUNC NUMBER PUNC NUMBER .   (rule 14)

    $default	reduce using rule 14 (date)



state 26

    $   	go to state 27



state 27

    $   	go to state 28



state 28

    $default	accept