imagine that english has a prefix that means "could be". it appears in the following words:

ootpossible "could be possible"			oorreplaceable "could be replaced"
ooequal "could be equal"			oothappy "could be happy"
oorrational "could be raitonal"			ooitchy "could be itchy"
ootflexible "could be flexible"			oollegal "could be legal"

what is the basic morpheme that represents "could be" and why do you say so? Make sure that your explanation accommodates all of the sample words.

morpheme: oot-
-it assimilates with liquid (r and l)
-it deletes with vowels
-it stays the same with consonent