I can halt you can halt he can halt we can halt you can halt they can halt
V-ing form
I can be halting you can be halting he can be halting we can be halting you can be halting they can be halting
Perfect
I can have halted you can have halted he can have halted we can have halted you can have halted they can have halted
V-ing perfect
I can have been halting you can have been halting he can have been halting we can have been halting you can have been halting they can have been halting
Negation
Simple form
I can't halt you can't halt he can't halt we can't halt you can't halt they can't halt
V-ing form
I can't be halting you can't be halting he can't be halting we can't be halting you can't be halting they can't be halting
Perfect
I can't have halted you can't have halted he can't have halted we can't have halted you can't have halted they can't have halted
V-ing perfect
I can't have been halting you can't have been halting he can't have been halting we can't have been halting you can't have been halting they can't have been halting
Interrogative form
Simple form
can I halt? can you halt? can he halt? can we halt? can you halt? can they halt?
V-ing form
can I be halting? can you be halting? can he be halting? can we be halting? can you be halting? can they be halting?
Perfect
can I have halted? can you have halted? can he have halted? can we have halted? can you have halted? can they have halted?
V-ing perfect
can I have been halting? can you have been halting? can he have been halting? can we have been halting? can you have been halting? can they have been halting?
Interro-negative form
Simple form
can't I halt? can't you halt? can't he halt? can't we halt? can't you halt? can't they halt?
V-ing form
can't I be halting? can't you be halting? can't he be halting? can't we be halting? can't you be halting? can't they be halting?
Perfect
can't I have halted? can't you have halted? can't he have halted? can't we have halted? can't you have halted? can't they have halted?
V-ing perfect
can't I have been halting? can't you have been halting? can't he have been halting? can't we have been halting? can't you have been halting? can't they have been halting?