I can compact you can compact he can compact we can compact you can compact they can compact
V-ing form
I can be compacting you can be compacting he can be compacting we can be compacting you can be compacting they can be compacting
Perfect
I can have compacted you can have compacted he can have compacted we can have compacted you can have compacted they can have compacted
V-ing perfect
I can have been compacting you can have been compacting he can have been compacting we can have been compacting you can have been compacting they can have been compacting
Negation
Simple form
I can't compact you can't compact he can't compact we can't compact you can't compact they can't compact
V-ing form
I can't be compacting you can't be compacting he can't be compacting we can't be compacting you can't be compacting they can't be compacting
Perfect
I can't have compacted you can't have compacted he can't have compacted we can't have compacted you can't have compacted they can't have compacted
V-ing perfect
I can't have been compacting you can't have been compacting he can't have been compacting we can't have been compacting you can't have been compacting they can't have been compacting
Interrogative form
Simple form
can I compact? can you compact? can he compact? can we compact? can you compact? can they compact?
V-ing form
can I be compacting? can you be compacting? can he be compacting? can we be compacting? can you be compacting? can they be compacting?
Perfect
can I have compacted? can you have compacted? can he have compacted? can we have compacted? can you have compacted? can they have compacted?
V-ing perfect
can I have been compacting? can you have been compacting? can he have been compacting? can we have been compacting? can you have been compacting? can they have been compacting?
Interro-negative form
Simple form
can't I compact? can't you compact? can't he compact? can't we compact? can't you compact? can't they compact?
V-ing form
can't I be compacting? can't you be compacting? can't he be compacting? can't we be compacting? can't you be compacting? can't they be compacting?
Perfect
can't I have compacted? can't you have compacted? can't he have compacted? can't we have compacted? can't you have compacted? can't they have compacted?
V-ing perfect
can't I have been compacting? can't you have been compacting? can't he have been compacting? can't we have been compacting? can't you have been compacting? can't they have been compacting?