Pike: 殳
殳 is called るまた and often appears on the right; it is traditionally associated with a hand holding a weapon. 殴 “hit,” 毅 “strong,” and 殻 “shell” show different meanings, so the old weapon association is only a broad historical clue, not a literal explanation for each character.
殴 has 8 strokes. Keep the right-side 殳 compact and finish its final stroke cleanly.