13 strokes
congratulations
On'Yomi: ズイ, スイ
Kun'Yomi: みず-, しるし
15 strokes
ear, ear (grain), head, crest (wave)
On'Yomi: スイ
Kun'Yomi: ほ
8 strokes
country
On'Yomi: コク
Kun'Yomi: くに