English verb conjugation
MUST ROIL

Regular verb: roil - roiled - roiled

Affirmation

Simple form	V-ing form
I must roil you must roil he must roil we must roil you must roil they must roil	I must be roiling you must be roiling he must be roiling we must be roiling you must be roiling they must be roiling
Perfect	V-ing perfect
I must have roiled you must have roiled he must have roiled we must have roiled you must have roiled they must have roiled	I must have been roiling you must have been roiling he must have been roiling we must have been roiling you must have been roiling they must have been roiling

Negation

Simple form	V-ing form
I mustn't roil you mustn't roil he mustn't roil we mustn't roil you mustn't roil they mustn't roil	I mustn't be roiling you mustn't be roiling he mustn't be roiling we mustn't be roiling you mustn't be roiling they mustn't be roiling
Perfect	V-ing perfect
I mustn't have roiled you mustn't have roiled he mustn't have roiled we mustn't have roiled you mustn't have roiled they mustn't have roiled	I mustn't have been roiling you mustn't have been roiling he mustn't have been roiling we mustn't have been roiling you mustn't have been roiling they mustn't have been roiling

Interrogative form

Simple form	V-ing form
must I roil? must you roil? must he roil? must we roil? must you roil? must they roil?	must I be roiling? must you be roiling? must he be roiling? must we be roiling? must you be roiling? must they be roiling?
Perfect	V-ing perfect
must I have roiled? must you have roiled? must he have roiled? must we have roiled? must you have roiled? must they have roiled?	must I have been roiling? must you have been roiling? must he have been roiling? must we have been roiling? must you have been roiling? must they have been roiling?

Interro-negative form

Simple form	V-ing form
mustn't I roil? mustn't you roil? mustn't he roil? mustn't we roil? mustn't you roil? mustn't they roil?	mustn't I be roiling? mustn't you be roiling? mustn't he be roiling? mustn't we be roiling? mustn't you be roiling? mustn't they be roiling?
Perfect	V-ing perfect
mustn't I have roiled? mustn't you have roiled? mustn't he have roiled? mustn't we have roiled? mustn't you have roiled? mustn't they have roiled?	mustn't I have been roiling? mustn't you have been roiling? mustn't he have been roiling? mustn't we have been roiling? mustn't you have been roiling? mustn't they have been roiling?