Psalm 7:17

יָשׁוּב עֲמָלֹו בְרֹאשֹׁו וְעַל קָדְקֳדֹו חֲמָסֹו יֵרֵד׃

Rough Word-by-word:
[He] It will return the labor of him on the head of him and on the crown of the head of him violence of him [he] it will go down.

Smooth Translation:
His labors will return on his head and his violence will go down on the crown of his head.

יָשׁוּב Qal imperfect 3ms from שׁוּב (he returned) "[he] it will return"

עֲמָלֹו noun ms with 3ms pronominal suffix "the labor of him" (Owens translates this as "his mischief")

בְרֹאשֹׁו preposition and noun ms with 3ms pronominal suffix "[in] on the head of him"

וְעַל conjunction and preposition "and on"

קָדְקֳדֹו noun ms with 3ms pronominal suffix "the crown of the head of him" (Owens calls it "his own pate.")

חֲמָסֹו noun ms with 3ms pronominal suffix "[the] violence of him"

יֵרֵד Qal imperfect 3ms from יָרַד (he went down) "[he] it will go down"