could halt
Regular verb: halt - halted- halted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could halt
you could halt
she could halt
we could halt
you could halt
they could halt 	I could be halting
you could be halting
she could be halting
we could be halting
you could be halting
they could be halting	I could have halted
you could have halted
she could have halted
we could have halted
you could have halted
they could have halted	I could have been halting
you could have been halting
she could have been halting
we could have been halting
you could have been halting
they could have been halting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't halt
you couldn't halt
she couldn't halt
we couldn't halt
you couldn't halt
they couldn't halt 	I couldn't be halting
you couldn't be halting
she couldn't be halting
we couldn't be halting
you couldn't be halting
they couldn't be halting	I couldn't have halted
you couldn't have halted
she couldn't have halted
we couldn't have halted
you couldn't have halted
they couldn't have halted	I couldn't have been halting
you couldn't have been halting
she couldn't have been halting
we couldn't have been halting
you couldn't have been halting
they couldn't have been halting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I halt?
could you halt?
could she halt?
could we halt?
could you halt?
could they halt? 	could I be halting?
could you be halting?
could she be halting?
could we be halting?
could you be halting?
could they be halting? 	could I have halted?
could you have halted?
could she have halted?
could we have halted?
could you have halted?
could they have halted? 	could I have been halting?
could you have been halting?
could she have been halting?
could we have been halting?
could you have been halting?
could they have been halting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I halt?
couldn't you halt?
couldn't she halt?
couldn't we halt?
couldn't you halt?
couldn't they halt? 	couldn't I be halting?
couldn't you be halting?
couldn't she be halting?
couldn't we be halting?
couldn't you be halting?
couldn't they be halting? 	couldn't I have halted?
couldn't you have halted?
couldn't she have halted?
couldn't we have halted?
couldn't you have halted?
couldn't they have halted? 	couldn't I have been halting?
couldn't you have been halting?
couldn't she have been halting?
couldn't we have been halting?
couldn't you have been halting?
couldn't they have been halting?