I might antedate you might antedate he might antedate we might antedate you might antedate they might antedate
V-ing form
I might be antedating you might be antedating he might be antedating we might be antedating you might be antedating they might be antedating
Perfect
I might have antedated you might have antedated he might have antedated we might have antedated you might have antedated they might have antedated
V-ing perfect
I might have been antedating you might have been antedating he might have been antedating we might have been antedating you might have been antedating they might have been antedating
Negation
Simple form
I mightn't antedate you mightn't antedate he mightn't antedate we mightn't antedate you mightn't antedate they mightn't antedate
V-ing form
I mightn't be antedating you mightn't be antedating he mightn't be antedating we mightn't be antedating you mightn't be antedating they mightn't be antedating
Perfect
I mightn't have antedated you mightn't have antedated he mightn't have antedated we mightn't have antedated you mightn't have antedated they mightn't have antedated
V-ing perfect
I mightn't have been antedating you mightn't have been antedating he mightn't have been antedating we mightn't have been antedating you mightn't have been antedating they mightn't have been antedating
Interrogative form
Simple form
might I antedate? might you antedate? might he antedate? might we antedate? might you antedate? might they antedate?
V-ing form
might I be antedating? might you be antedating? might he be antedating? might we be antedating? might you be antedating? might they be antedating?
Perfect
might I have antedated? might you have antedated? might he have antedated? might we have antedated? might you have antedated? might they have antedated?
V-ing perfect
might I have been antedating? might you have been antedating? might he have been antedating? might we have been antedating? might you have been antedating? might they have been antedating?
Interro-negative form
Simple form
mightn't I antedate? mightn't you antedate? mightn't he antedate? mightn't we antedate? mightn't you antedate? mightn't they antedate?
V-ing form
mightn't I be antedating? mightn't you be antedating? mightn't he be antedating? mightn't we be antedating? mightn't you be antedating? mightn't they be antedating?
Perfect
mightn't I have antedated? mightn't you have antedated? mightn't he have antedated? mightn't we have antedated? mightn't you have antedated? mightn't they have antedated?
V-ing perfect
mightn't I have been antedating? mightn't you have been antedating? mightn't he have been antedating? mightn't we have been antedating? mightn't you have been antedating? mightn't they have been antedating?