मानसार शिल्पशास्त्र (प्रसन्ना कुमार आचार्य - प्राचीन भारतीय स्थापत्य, नगर-नियोजन व मूर्ति-शिल्प महाकोश)

'? No, it's 'द' with something?
Wait! Look at verse 48, second half:
"चतुर्दिक्षु चतुर्द्वारं ..."
What fits the meter?
च-तुर्-दिक्-षु (4) च-तुर्-द्वा-रं (4) = 8 syllables.
Next pada:
स-प्त-द-ग्मे (4) स-भ-द्र-कम् (4) = 8 syllables!
So that word has 4 syllables:
1: स
2: प्त
3: द (or something else?)
4: ग्मे / श्मे / र्मे ?
Wait! Look at syllable 3 and 4:
Could it be 'रङ्गे'?
"सप्तरङ्गे सभद्रकम्"?
Wait! Look at line 17: "कल्पयेन्नवरङ्गं" (9 ranga).
Line 19: could it be "सप्तरङ्गे"?
LOOK AT IT!
स (sa)
प्त (pta)
र (ra)
ङ्गे (ṅge)!
LOOK AT 'रङ्गे':
The third letter is 'र'!
The fourth letter is 'ङ्गे'!
Look at line 20: "षडङ्गे"! Compare the 'ङ्गे' in 'षडङ्गे' with the fourth letter in line 19:
THEY ARE THE EXACT SAME GLYPH: 'ङ्गे'!!
And