वरिवस्यारहस्य (भास्करराय मखी - सरोजिनी हिन्दी व्याख्या, कामकला व श्रीविद्या मन्त्र-दर्शन)

left: त्र.
Here, it is clearly त् and त: चित्त. Let's look really closely:
च + ि = चि
then त्त: vertical stem with the horizontal curved hook of double t. There is no right leg or left slant. But wait, is there an aa matra? No, it ends at the stem. Wait, could it be चित्त or चित्रा? It definitely looks like चित्त (or maybe typo in the printed book for चित्रा, but we transcribe what is printed: चित्त).

At the very bottom left:
६ वरि.
(This is the signature/quire mark: 6 Vari. meaning Varivasyarahasya, 6th gathering).

Wait! Let's decide on the transcription format:
Should we use Markdown columns, or transcribe column-by-column?
Column-by-column is so much cleaner, readable, and standard for vertical columns!
Let's see:
Header:
प्रथमोऽशः ८१

Then Column 1, Column 2, Column 3.
Wait, let's clearly label them so that the table structure is fully preserved:

(१) वाग्भवकूट

...
[L..] ### (२) (कामराजकूट)
...
[L..] ### (३) शक्तिकूट)
...
Wait, or can we present it as a table using markdown?
Wait!