故 gù: 故 ancient, old; reason, because CTP
inst: 默然故 tūṣṇīṃbhāvena (義);
abl: 是故 tasmāt (義); 默然故 yasmāt tūṣṇīm (義); 續故 santateḥ (真,玄);
ger: 故心 saṃcintya (義);
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