could hiccough
Regular verb: hiccough - hiccoughed- hiccoughed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hiccough
you could hiccough
he could hiccough
we could hiccough
you could hiccough
they could hiccough 	I could be hiccoughing
you could be hiccoughing
he could be hiccoughing
we could be hiccoughing
you could be hiccoughing
they could be hiccoughing	I could have hiccoughed
you could have hiccoughed
he 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
he 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
he 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
he 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
he 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
he 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 he hiccough?
could we hiccough?
could you hiccough?
could they hiccough? 	could I be hiccoughing?
could you be hiccoughing?
could he be hiccoughing?
could we be hiccoughing?
could you be hiccoughing?
could they be hiccoughing? 	could I have hiccoughed?
could you have hiccoughed?
could he 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 he 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 he 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 he 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 he 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 he have been hiccoughing?
couldn't we have been hiccoughing?
couldn't you have been hiccoughing?
couldn't they have been hiccoughing?