Possibility \#5

Possibility #5

When ti follows a vowel, it becomes cc

ti > ty > cc

e.g. ati > aty > acc + anta > accanta

In Kaccāyana this is called (19) sabbo caṃ ti

and (28) para dvebhāvo ṭhāne.

ati	anta	accanta	adj	final, complete
iti	etaṃ	iccetaṃ	pron	thus this
iti	āsi	iccāsi	aor	it was thus
ati	āyata	accāyata	adj	too tightly stretched
ati	āraddha	accāraddha	adj	overly aroused
pati	atta	paccatta	adj	personal

as you can see this mostly occurs with the indeclinable iti and the prefixes ati and pati

There are a few other consonant changes discussed in Kaccāyana. Feel free to study them as an extra task.