I can access you can access he can access we can access you can access they can access
V-ing form
I can be accessing you can be accessing he can be accessing we can be accessing you can be accessing they can be accessing
Perfect
I can have accessed you can have accessed he can have accessed we can have accessed you can have accessed they can have accessed
V-ing perfect
I can have been accessing you can have been accessing he can have been accessing we can have been accessing you can have been accessing they can have been accessing
Negation
Simple form
I can't access you can't access he can't access we can't access you can't access they can't access
V-ing form
I can't be accessing you can't be accessing he can't be accessing we can't be accessing you can't be accessing they can't be accessing
Perfect
I can't have accessed you can't have accessed he can't have accessed we can't have accessed you can't have accessed they can't have accessed
V-ing perfect
I can't have been accessing you can't have been accessing he can't have been accessing we can't have been accessing you can't have been accessing they can't have been accessing
Interrogative form
Simple form
can I access? can you access? can he access? can we access? can you access? can they access?
V-ing form
can I be accessing? can you be accessing? can he be accessing? can we be accessing? can you be accessing? can they be accessing?
Perfect
can I have accessed? can you have accessed? can he have accessed? can we have accessed? can you have accessed? can they have accessed?
V-ing perfect
can I have been accessing? can you have been accessing? can he have been accessing? can we have been accessing? can you have been accessing? can they have been accessing?
Interro-negative form
Simple form
can't I access? can't you access? can't he access? can't we access? can't you access? can't they access?
V-ing form
can't I be accessing? can't you be accessing? can't he be accessing? can't we be accessing? can't you be accessing? can't they be accessing?
Perfect
can't I have accessed? can't you have accessed? can't he have accessed? can't we have accessed? can't you have accessed? can't they have accessed?
V-ing perfect
can't I have been accessing? can't you have been accessing? can't he have been accessing? can't we have been accessing? can't you have been accessing? can't they have been accessing?