[ SynNone :< SimpleF
    ( SimpleSymbol "abc" )
, SynNone :< SimpleF
    ( SimpleString "xyz" )
, SynNone :< SimpleF
    ( SimpleSymbol "수학" )
, SynNone :< CompoundF
    ( ListF Ordinary
        [ SynNone :< SimpleF
            ( SimpleSymbol "數學" )
        ]
    )
]