I may thwart you may thwart he may thwart we may thwart you may thwart they may thwart
V-ing form
I may be thwarting you may be thwarting he may be thwarting we may be thwarting you may be thwarting they may be thwarting
Perfect
I may have thwarted you may have thwarted he may have thwarted we may have thwarted you may have thwarted they may have thwarted
V-ing perfect
I may have been thwarting you may have been thwarting he may have been thwarting we may have been thwarting you may have been thwarting they may have been thwarting
Negation
Simple form
I may not thwart you may not thwart he may not thwart we may not thwart you may not thwart they may not thwart
V-ing form
I may not be thwarting you may not be thwarting he may not be thwarting we may not be thwarting you may not be thwarting they may not be thwarting
Perfect
I may not have thwarted you may not have thwarted he may not have thwarted we may not have thwarted you may not have thwarted they may not have thwarted
V-ing perfect
I may not have been thwarting you may not have been thwarting he may not have been thwarting we may not have been thwarting you may not have been thwarting they may not have been thwarting
Interrogative form
Simple form
may I thwart? may you thwart? may he thwart? may we thwart? may you thwart? may they thwart?
V-ing form
may I be thwarting? may you be thwarting? may he be thwarting? may we be thwarting? may you be thwarting? may they be thwarting?
Perfect
may I have thwarted? may you have thwarted? may he have thwarted? may we have thwarted? may you have thwarted? may they have thwarted?
V-ing perfect
may I have been thwarting? may you have been thwarting? may he have been thwarting? may we have been thwarting? may you have been thwarting? may they have been thwarting?
Interro-negative form
Simple form
may I not thwart? may you not thwart? may he not thwart? may we not thwart? may you not thwart? may they not thwart?
V-ing form
may I not be thwarting? may you not be thwarting? may he not be thwarting? may we not be thwarting? may you not be thwarting? may they not be thwarting?
Perfect
may I not have thwarted? may you not have thwarted? may he not have thwarted? may we not have thwarted? may you not have thwarted? may they not have thwarted?
V-ing perfect
may I not have been thwarting? may you not have been thwarting? may he not have been thwarting? may we not have been thwarting? may you not have been thwarting? may they not have been thwarting?