Answer:
The possible suffixes are -able, -ous, -ation, and -ance.
Step-by-step explanation:
The first three possible suffixes are very common to see:
-continuable is an adjective meaning that something can be continued;
-continuous is also an adjective, meaning something is constant, it doesn't stop;
-continuation is a noun that refers to the process of carrying an action on for a period of time.
It is not as common to see the noun continuance, but it does exist. It is a synonym for continuation.