could hiccough
Regular verb: hiccough - hiccoughed- hiccoughed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hiccough
you could hiccough
she could hiccough
we could hiccough
you could hiccough
they could hiccough 	I could be hiccoughing
you could be hiccoughing
she could be hiccoughing
we could be hiccoughing
you could be hiccoughing
they could be hiccoughing	I could have hiccoughed
you could have hiccoughed
she could have hiccoughed
we could have hiccoughed
you could have hiccoughed
they could have hiccoughed	I could have been hiccoughing
you could have been hiccoughing
she could have been hiccoughing
we could have been hiccoughing
you could have been hiccoughing
they could have been hiccoughing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't hiccough
you couldn't hiccough
she couldn't hiccough
we couldn't hiccough
you couldn't hiccough
they couldn't hiccough 	I couldn't be hiccoughing
you couldn't be hiccoughing
she couldn't be hiccoughing
we couldn't be hiccoughing
you couldn't be hiccoughing
they couldn't be hiccoughing	I couldn't have hiccoughed
you couldn't have hiccoughed
she couldn't have hiccoughed
we couldn't have hiccoughed
you couldn't have hiccoughed
they couldn't have hiccoughed	I couldn't have been hiccoughing
you couldn't have been hiccoughing
she couldn't have been hiccoughing
we couldn't have been hiccoughing
you couldn't have been hiccoughing
they couldn't have been hiccoughing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hiccough?
could you hiccough?
could she hiccough?
could we hiccough?
could you hiccough?
could they hiccough? 	could I be hiccoughing?
could you be hiccoughing?
could she be hiccoughing?
could we be hiccoughing?
could you be hiccoughing?
could they be hiccoughing? 	could I have hiccoughed?
could you have hiccoughed?
could she have hiccoughed?
could we have hiccoughed?
could you have hiccoughed?
could they have hiccoughed? 	could I have been hiccoughing?
could you have been hiccoughing?
could she have been hiccoughing?
could we have been hiccoughing?
could you have been hiccoughing?
could they have been hiccoughing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hiccough?
couldn't you hiccough?
couldn't she hiccough?
couldn't we hiccough?
couldn't you hiccough?
couldn't they hiccough? 	couldn't I be hiccoughing?
couldn't you be hiccoughing?
couldn't she be hiccoughing?
couldn't we be hiccoughing?
couldn't you be hiccoughing?
couldn't they be hiccoughing? 	couldn't I have hiccoughed?
couldn't you have hiccoughed?
couldn't she have hiccoughed?
couldn't we have hiccoughed?
couldn't you have hiccoughed?
couldn't they have hiccoughed? 	couldn't I have been hiccoughing?
couldn't you have been hiccoughing?
couldn't she have been hiccoughing?
couldn't we have been hiccoughing?
couldn't you have been hiccoughing?
couldn't they have been hiccoughing?