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