User:Pengo/clad
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┌────── a ────┤ │ ┌─── b └──┤ └─── c
Very simple 3-level cladogram. The first parameter is the outgroup, the second and third are sisters groups.
For example:
will produce:
┌────── frog ────┤ │ ┌─── apoda └──┤ └─── salamander