--- 
nl: 
  
  e9s:
    singular:
      - rule:          en$
        replacement:   ""

    plural:
      - rule:          cees$
        replacement:   cesen
        
      - rule:          chys$
        replacement:   chen
      
      - rule:          (c|m|n|t)us$
        replacement:   \1i
        exceptions:  | abortus, anus
      
      - rule:          (c|d|e|i|t|tr|v)um$
        replacement:   \1a
        exceptions:    (anthu|aqua)rium
      
      - rule:          ee$
        replacement:   eeën
        exceptions:    abonnee
      
      - rule:          eum$
        replacement:   ea
      
      - rule:          heid$
        replacement:   heden
      
      - rule:          dix$
        replacement:   dices
      
      - rule:          lid$
        replacement:   leden
      
      - rule:          (nuens)is$
        replacement:   \1es
      
      - rule:          stad$
        replacement:   steden
      
      - rule:        | abc, acme, acne, (a|ë|i|o|u|y)$
        replacement:   \1's
        exceptions:    (ai|eau|ei|li|lieu|ooi|ou|shampoo|spray|vlo)$
        
      - rule:          (blad|kind)$
        replacement:   \1eren
        exceptions:    (aanrecht|advertentie)blad
      
      - rule:          (ige)$
        replacement:   \1n

      - rule:          (allerg|bat|scop|fantas|fib|log|mal|metr|nest|nom|or|path)ie$
        replacement:   \1ieën
        exceptions:    approbatie

      - rule:          (alka|o)(l)ie?$
        replacement:   \1\2iën

      - rule:          (schip)$
        replacement:   schepen
      
      - rule:          (abort|act|acquisit|advis|amat|inspect)(eur)$
        replacement:   \1\2s
        
      - rule:        | (gevoel)$
        replacement:   \1ens
      
      - rule:        | (accent|agent)([-\s])(\w+)
        replacement:   \1s\2\3s
      
      - rule:          advocaat-(\w+)
        replacement:   advocaten-\1
        
      - rule:          (bike|borstel|distel|kabel|prikkel|winkel)$
        replacement:   \1s
      
      - rule:        | abraham, account, act, addict, adoptiefzoon, ah, ai, air, airstrip, alligator, amant, ampersand, analysator, animator, anklet, antiquair, arbeidspool,
                       (aar|aard|age|ah|bag|beignet|bike|chef|chon|club|e|é|eau|eër|el|em|en|eon|er|erd|festival|filet|film)$,
                       (foon|ie|ier|iër|kon|lation|lieu|lotion|marshal|nal|oir|oor|ose|ou|our|ount|pon|poo|prop|rak|rant|rn|sar|sion|sit|show|sor|spray)$,
                       (sun|tank|tant|test|um|view)$
        replacement:   \1s
        exceptions:  | a-attest, aar, aardster, aarlenaar, acceptant, adoptant, afgifte, albe, alge, allofoon, amandel, amarant, ante, antifoon, antipode, aquarel, arelaar,
                       ((aan|ge|ver|voor).*de|afe|ate|bel|bier|cel|contractant|denkende|deur|dier|dienaar|dode|eem|een|eel|eer|einde)$,
                       (ene|engel|gezwel|gier|iel|iem|isme|ïsme|jaar|ke|kel|krant|lem|lier|maatregel|migrant)$, 
                       (model|officier|oïde|oor|oen|oer|eose|penaar|rivale|schel|schijnsel|sien|spier|ste|stel|stem|taar|tenaar|tier|tride|uaar|vaar|valide|verwante|vrage|zijde)$

      - rule:          (a|e|o|u)\1f$
        replacement:   \1ven
        exceptions:    (graaf|soof)$

      - rule:          (a|e|o|u)\1s$
        replacement:   \1zen
      
      - rule:          (ver|cijn)s$
        replacement:   \1zen

      - rule:        | (a|e|o|u)\1([^aeiou])$
        replacement:   \1\2en
        
      - rule:        | (aï|alia)(s), 
                       ([^aeiou][aeiou])([^aeioux])$, 
                       ^([aeiou])([^aeioux])$
        replacement:   \1\2\2en
        exceptions:    alcohol, amandel, apostel, dal, pad, slot, vat, 
                       (blad|dag|dak|engel|gat|god|hertog|ij|kel|oorlog|proton|regel|schijnsel|schot|slag|tor|weg)$

      - rule:          (de|ene)$
        replacement:   \1n
        
      - rule:          f$
        replacement:   ven
        exceptions:    morf$

      - rule:        | ([aeiou]|aar|eur|ij)s$
        replacement:   \1zen
        exceptions:    (kaars|kruis)$

      - rule:          (lo)$
        replacement:   \1oien

      - rule:          (wei|zij)$
        replacement:   \1den

      - rule:          (e)$
        replacement:   \1n

      - rule:          $
        replacement:   en
    
    irregular:
      "accountant-administratieconsulent": "accountants-administratieconsulenten"
      "agens"                            : "agentia"
      "akkerman"                         : "akkerlieden"
      "album amicorum"                   : "alba amicorum"
      "ambachtsman"                      : "ambachtslieden"
      "anchorman"                        : "anchormen"
      "anchorwoman"                      : "anchorwomen"
    
    uncountable:
      - geld
      - informatie
      - rijst
      - afrokapsel # according to WNT