An user Dutch
says…

Dat
Pronoun
  is
Auxiliary
  niet
🚫
Adverb
  alleen
Adverb
  in
Adposition
  hun
Pronoun
maar
Coordinating conjunction
  ook
Adverb
  in
Adposition
  ons
ons
Pronoun
  belang
Noun
.

That is not only in their interest, but also in ours.
Words and sentences
New
dat

New
is

New
alleen

New
hun

  1. The dative case of the third-person plural personal pronoun: them, to them.
  2. The accusative case of the third-person plural personal pronoun: them.

New
in

ons
New
ons

New
belang

  1. interest, concern
  2. importance, significance

New
ook

  1. also, too, moreover
  2. either
  3. -ever
  4. particle for emphasis

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