I can shortwave you can shortwave he can shortwave we can shortwave you can shortwave they can shortwave
V-ing form
I can be shortwaving you can be shortwaving he can be shortwaving we can be shortwaving you can be shortwaving they can be shortwaving
Perfect
I can have shortwaved you can have shortwaved he can have shortwaved we can have shortwaved you can have shortwaved they can have shortwaved
V-ing perfect
I can have been shortwaving you can have been shortwaving he can have been shortwaving we can have been shortwaving you can have been shortwaving they can have been shortwaving
Negation
Simple form
I cannot shortwave you cannot shortwave he cannot shortwave we cannot shortwave you cannot shortwave they cannot shortwave
V-ing form
I cannot be shortwaving you cannot be shortwaving he cannot be shortwaving we cannot be shortwaving you cannot be shortwaving they cannot be shortwaving
Perfect
I cannot have shortwaved you cannot have shortwaved he cannot have shortwaved we cannot have shortwaved you cannot have shortwaved they cannot have shortwaved
V-ing perfect
I cannot have been shortwaving you cannot have been shortwaving he cannot have been shortwaving we cannot have been shortwaving you cannot have been shortwaving they cannot have been shortwaving
Interrogative form
Simple form
can I shortwave? can you shortwave? can he shortwave? can we shortwave? can you shortwave? can they shortwave?
V-ing form
can I be shortwaving? can you be shortwaving? can he be shortwaving? can we be shortwaving? can you be shortwaving? can they be shortwaving?
Perfect
can I have shortwaved? can you have shortwaved? can he have shortwaved? can we have shortwaved? can you have shortwaved? can they have shortwaved?
V-ing perfect
can I have been shortwaving? can you have been shortwaving? can he have been shortwaving? can we have been shortwaving? can you have been shortwaving? can they have been shortwaving?
Interro-negative form
Simple form
can I not shortwave? can you not shortwave? can he not shortwave? can we not shortwave? can you not shortwave? can they not shortwave?
V-ing form
can I not be shortwaving? can you not be shortwaving? can he not be shortwaving? can we not be shortwaving? can you not be shortwaving? can they not be shortwaving?
Perfect
can I not have shortwaved? can you not have shortwaved? can he not have shortwaved? can we not have shortwaved? can you not have shortwaved? can they not have shortwaved?
V-ing perfect
can I not have been shortwaving? can you not have been shortwaving? can he not have been shortwaving? can we not have been shortwaving? can you not have been shortwaving? can they not have been shortwaving?