न्यायमञ्जरी: प्रथम भाग (आचार्य जयन्त भट्ट - पं. सूर्यनारायण शुक्ल सम्पादित, काशी संस्कृत ग्रन्थमाला)

:
It has:
Letter 1: न
Letter 2: त् + ू = तू. Wait, is it तू or त्वे? Notice the circle below: it goes down and curves right, exactly like 'ू'.
Letter 3: It has two vertical stems, joined at the bottom? No, look at the top bar: it's 'म' or 'य'?
In Sanskrit, "न त्वेवमसमये" is the actual sentence: "न त्वेवमसमये तदधिगमसमर्थामुपलभामहे" (We do not, however, find an untimed path capable of attaining that [liberation]...).
Wait, why does it look like "तूममसमये"? It's a typical misprint of "त्वेवमसमये" where the typesetter misread or used damaged types.
Looking closely at the image:
न तूयमसमये or न तूममसमये.
Let's transcribe "न तूममसमये".

Let's check line 3:
"स्य दुस्तरत्वात् , ऋणानुबन्धस्ता'वज्जायमानो ह वै ब्राह्मणस्त्रिभिऋणैर्ऋणवान्"
Wait, is there an apostrophe after ता?
Look: "ऋणानुबन्धस्ता'वज्जायमानो" - yes, there is an inverted comma before 'वज्जायमानो' or above it.
And "ब्राह्मणस्त्रिभिऋणैर्ऋणवान्