TODO

prolog dcg

INPUT:

Animal
    Fish
        minnow
    Bug
        ant
        beetle
Plant
    azalea

OR:

Animal { Fish { minnow }, Bug { ant, beetle } }, Plant { azalea }

OR:

<Animal>
    <Fish>
        <minnow/>
    </Fish>
    <Bug>
        <ant/>
        <beetle/>
    </Bug>
</Animal>
<Plant>
    <azalea/>
</Plant>

OUTPUT
Animal
Animal|Fish
Animal|Fish|minnow
Animal|Bug
Animal|Bug|ant
Animal|Bug|beetle
Plant|azalea


maps to table
{'class': 'warrior', hand': 'halberd', 'armor': 'full plate' },
{'hand': 'dagger', 'armor': 'studded leather', 'head': 'cap' },
{'hand': 'sword', 'feet': 'leather boots', 'head': 'helmet' }

(not aligned though)
class   | hand    | armor           | head   | feet
warrior | halberd | full plate      |        |
        | dagger  | studded leather | cap    |
        | sword   |                 | helmet | leather boots