I can command you can command he can command we can command you can command they can command
V-ing form
I can be commanding you can be commanding he can be commanding we can be commanding you can be commanding they can be commanding
Perfect
I can have commanded you can have commanded he can have commanded we can have commanded you can have commanded they can have commanded
V-ing perfect
I can have been commanding you can have been commanding he can have been commanding we can have been commanding you can have been commanding they can have been commanding
Negation
Simple form
I can't command you can't command he can't command we can't command you can't command they can't command
V-ing form
I can't be commanding you can't be commanding he can't be commanding we can't be commanding you can't be commanding they can't be commanding
Perfect
I can't have commanded you can't have commanded he can't have commanded we can't have commanded you can't have commanded they can't have commanded
V-ing perfect
I can't have been commanding you can't have been commanding he can't have been commanding we can't have been commanding you can't have been commanding they can't have been commanding
Interrogative form
Simple form
can I command? can you command? can he command? can we command? can you command? can they command?
V-ing form
can I be commanding? can you be commanding? can he be commanding? can we be commanding? can you be commanding? can they be commanding?
Perfect
can I have commanded? can you have commanded? can he have commanded? can we have commanded? can you have commanded? can they have commanded?
V-ing perfect
can I have been commanding? can you have been commanding? can he have been commanding? can we have been commanding? can you have been commanding? can they have been commanding?
Interro-negative form
Simple form
can't I command? can't you command? can't he command? can't we command? can't you command? can't they command?
V-ing form
can't I be commanding? can't you be commanding? can't he be commanding? can't we be commanding? can't you be commanding? can't they be commanding?
Perfect
can't I have commanded? can't you have commanded? can't he have commanded? can't we have commanded? can't you have commanded? can't they have commanded?
V-ing perfect
can't I have been commanding? can't you have been commanding? can't he have been commanding? can't we have been commanding? can't you have been commanding? can't they have been commanding?