I can ship you can ship she can ship we can ship you can ship they can ship
V-ing form
I can be shipping you can be shipping she can be shipping we can be shipping you can be shipping they can be shipping
Perfect
I can have shipped you can have shipped she can have shipped we can have shipped you can have shipped they can have shipped
V-ing perfect
I can have been shipping you can have been shipping she can have been shipping we can have been shipping you can have been shipping they can have been shipping
Negation
Simple form
I can't ship you can't ship she can't ship we can't ship you can't ship they can't ship
V-ing form
I can't be shipping you can't be shipping she can't be shipping we can't be shipping you can't be shipping they can't be shipping
Perfect
I can't have shipped you can't have shipped she can't have shipped we can't have shipped you can't have shipped they can't have shipped
V-ing perfect
I can't have been shipping you can't have been shipping she can't have been shipping we can't have been shipping you can't have been shipping they can't have been shipping
Interrogative form
Simple form
can I ship? can you ship? can she ship? can we ship? can you ship? can they ship?
V-ing form
can I be shipping? can you be shipping? can she be shipping? can we be shipping? can you be shipping? can they be shipping?
Perfect
can I have shipped? can you have shipped? can she have shipped? can we have shipped? can you have shipped? can they have shipped?
V-ing perfect
can I have been shipping? can you have been shipping? can she have been shipping? can we have been shipping? can you have been shipping? can they have been shipping?
Interro-negative form
Simple form
can't I ship? can't you ship? can't she ship? can't we ship? can't you ship? can't they ship?
V-ing form
can't I be shipping? can't you be shipping? can't she be shipping? can't we be shipping? can't you be shipping? can't they be shipping?
Perfect
can't I have shipped? can't you have shipped? can't she have shipped? can't we have shipped? can't you have shipped? can't they have shipped?
V-ing perfect
can't I have been shipping? can't you have been shipping? can't she have been shipping? can't we have been shipping? can't you have been shipping? can't they have been shipping?