hy

he (third-person singular masculine pronoun)

de

the; definite article

wyn

wind

der

there (unspecific to distance)

goed

good

ûnder

1. under
2. among
3. during

yn

1. in
2. into

syn

1. his (third-person singular masculine possessive determiner)
2. its (third-person singular neuter possessive determiner)