This is the 1967th most frequent Swedish word.
skrivna
"Written" (past participle of "write").
skrivna is used as an adjective, modifying the plural noun 'texter', meaning 'written'.
Alla skrivna texter ska läsas noggrant.
All written texts should be read carefully.
skriven is used as the past participle of the verb 'skriva', describing the state of the book.
Boken är skriven av en känd författare.
The book is written by a famous author.
skrivna is again used adjectivally, modifying the plural noun 'verk'.