chars_upper_to_lower:
Ā|ā
Ī|ī
Ū|ū
Ṛ|ṛ
Ṝ|ṝ
Ḷ|ḷ
Ṃ|ṃ
Ḥ|ḥ
Ṅ|ṅ
Ñ|ñ
Ṭ|ṭ
Ḍ|ḍ
Ṇ|ṇ
Ś|ś
Ṣ|ṣ

graphems:
a, ā, i, ī, u, ū, ṛ, ṝ, ḷ, e, ai, o, au, ṃ, ṁ, ḥ, k, kh, g, gh, ṅ, c, ch, j, jh, ñ, ṭ, ṭh, ḍ, ḍh, ṇ, t, th, d, th, n, p, ph, b, bh, m, y, r, l, v, ś, ṣ, s, h

orthographic_initial:
a: '
ā: ''

orthographic_many_to_one:
tt: t
ddh: dh
rr: r

orthographic_overall:
ā: ā'
ṃ: ṁ,ṅ,ñ,ṇ,n,m
ṁ: ṃ,ṅ,ñ,ṇ,n,m
ṅ: ṃ,ṁ
ñ: ṃ,ṁ
ṇ: ṃ,ṁ
t: tt
d: dd
dh: ddh
n: ṃ,ṁ
b: v
bh: m
m: ṃ,ṁ,ṅ,ñ,ṇ,n
y: s
v: b
ṣ: v
s: ṣ

sandhi_final:
a: ā,e,o
ā: e,o,ai
i: ī,y
u: ū,v
e: a
c: g
t: c,j,d,n
d: t
n: ṃs,nn,
m: ṃ
ś: g
s: r,ḥ

sandhi_initial:
a: ā
i: ī,e
u: ū
e: ai
ś: ch

sandhi_many_to_one:
as: o
ās: ā