καὶ διηγήσαντο αὐτοῖς οἱ ἰδόντες πῶς ἐγένετο τῷ δαιμονιζομένῳ καὶ περὶ τῶν χοίρων.

1. καὶ
   and
2. διηγήσαντο
   they recounted
   they related, recounted
3. αὐτοῖς
   to them
   them
4. οἱ
   the
5. ἰδόντες
   having seen
6. πῶς
   how
7. ἐγένετο
   it happened
   became, came into existence
8. τῷ
   the
   to the
9. δαιμονιζομένῳ
   demon possessed man
10. καὶ
    and
11. περὶ
    about
    concerning
12. τῶν
    of the
13. χοίρων
    pigs
    of pigs, swine
14.  
    .
     

And those who had seen it recounted to them how it happened to the demon possessed man and concerning the pigs.