Outer[^a].

[^a]: Body has a [^b] ref and **bold [^c]** wrapper.

    Continuation line with [^d] ref too.

    > Nested blockquote has [^e] ref.

    - List in def has [^f] ref.

[^b]: B body.

[^c]: C body.

[^d]: D body.

[^e]: E body.

[^f]: F body.
