I can skirmish you can skirmish she can skirmish we can skirmish you can skirmish they can skirmish
V-ing form
I can be skirmishing you can be skirmishing she can be skirmishing we can be skirmishing you can be skirmishing they can be skirmishing
Perfect
I can have skirmished you can have skirmished she can have skirmished we can have skirmished you can have skirmished they can have skirmished
V-ing perfect
I can have been skirmishing you can have been skirmishing she can have been skirmishing we can have been skirmishing you can have been skirmishing they can have been skirmishing
Negation
Simple form
I can't skirmish you can't skirmish she can't skirmish we can't skirmish you can't skirmish they can't skirmish
V-ing form
I can't be skirmishing you can't be skirmishing she can't be skirmishing we can't be skirmishing you can't be skirmishing they can't be skirmishing
Perfect
I can't have skirmished you can't have skirmished she can't have skirmished we can't have skirmished you can't have skirmished they can't have skirmished
V-ing perfect
I can't have been skirmishing you can't have been skirmishing she can't have been skirmishing we can't have been skirmishing you can't have been skirmishing they can't have been skirmishing
Interrogative form
Simple form
can I skirmish? can you skirmish? can she skirmish? can we skirmish? can you skirmish? can they skirmish?
V-ing form
can I be skirmishing? can you be skirmishing? can she be skirmishing? can we be skirmishing? can you be skirmishing? can they be skirmishing?
Perfect
can I have skirmished? can you have skirmished? can she have skirmished? can we have skirmished? can you have skirmished? can they have skirmished?
V-ing perfect
can I have been skirmishing? can you have been skirmishing? can she have been skirmishing? can we have been skirmishing? can you have been skirmishing? can they have been skirmishing?
Interro-negative form
Simple form
can't I skirmish? can't you skirmish? can't she skirmish? can't we skirmish? can't you skirmish? can't they skirmish?
V-ing form
can't I be skirmishing? can't you be skirmishing? can't she be skirmishing? can't we be skirmishing? can't you be skirmishing? can't they be skirmishing?
Perfect
can't I have skirmished? can't you have skirmished? can't she have skirmished? can't we have skirmished? can't you have skirmished? can't they have skirmished?
V-ing perfect
can't I have been skirmishing? can't you have been skirmishing? can't she have been skirmishing? can't we have been skirmishing? can't you have been skirmishing? can't they have been skirmishing?