Phaladeepika
अन्योन्यं भवनस्थयोर्विहगयोर्लग्नादिरिह्फान्तकं भावाधीश्वर्योः क्रमेण कथिताः षट्षष्टियोगा जनैः । त्रिशद्दैन्यमुदीरितं व्ययरिपुच्छिद्रादिनाथोत्थिता- स्त्वष्टौ शौर्यपतेः खला निगदिताः शेषा महाख्याः स्मृताः ॥ ३२॥
When two planets each owning a Bhava mutually interchange places, i. e., each occupy the other's house, the action is termed Parivartana ; and there are 66 such interchanges caused by the several pairs of Bhava-lords beginning from the Lagna and ending with the 12 th. Out of these, 30 are caused by the lords of the 6 th, 8 th and 12 th and are termed Dainya Yogas; and 8 are caused by the lord of the 3 rd
english translation
anyonyaM bhavanasthayorvihagayorlagnAdirihphAntakaM bhAvAdhIzvaryoH krameNa kathitAH SaTSaSTiyogA janaiH । trizaddainyamudIritaM vyayaripucchidrAdinAthotthitA- stvaSTau zauryapateH khalA nigaditAH zeSA mahAkhyAH smRtAH ॥ 32॥
hk transliteration by Sanscript