WHOLE CHARACTER
司sī
to manage; to be in charge of; a government department; an office
司 is managing, and the office that does it: 司机 'driver', 司法 'justice', 公司 'company'.
ZDIC header: 会意 with no parts named; shown as a visual aid: a hooking outer stroke over a bar and the mouth piece 口.
OUTER FRAME: THE TOP-AND-RIGHT HOOKING STROKE
㇆
Notice this part of the shape; it is not taught as a separate word in this lesson.
In 司: outer frame: the top-and-right hooking stroke Shown with its documented or clearly limited role.
MIDDLE: THE HORIZONTAL BAR INSIDE
一yī
one
Structural source piece in 百; not every visible stroke-like piece is taught as a separate word.
In 司: middle: the horizontal bar inside Shown with its documented or clearly limited role.
INNER: THE MOUTH PIECE
口kǒu
mouth; opening
Mouth/speech/opening clue; may also be a repeated visual element.
In 司: inner: the mouth piece A written piece; no historical role is claimed here.