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