could lust
Regular verb: lust - lusted- lusted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could lust
you could lust
he could lust
we could lust
you could lust
they could lust 	I could be lusting
you could be lusting
he could be lusting
we could be lusting
you could be lusting
they could be lusting	I could have lusted
you could have lusted
he could have lusted
we could have lusted
you could have lusted
they could have lusted	I could have been lusting
you could have been lusting
he could have been lusting
we could have been lusting
you could have been lusting
they could have been lusting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't lust
you couldn't lust
he couldn't lust
we couldn't lust
you couldn't lust
they couldn't lust 	I couldn't be lusting
you couldn't be lusting
he couldn't be lusting
we couldn't be lusting
you couldn't be lusting
they couldn't be lusting	I couldn't have lusted
you couldn't have lusted
he couldn't have lusted
we couldn't have lusted
you couldn't have lusted
they couldn't have lusted	I couldn't have been lusting
you couldn't have been lusting
he couldn't have been lusting
we couldn't have been lusting
you couldn't have been lusting
they couldn't have been lusting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I lust?
could you lust?
could he lust?
could we lust?
could you lust?
could they lust? 	could I be lusting?
could you be lusting?
could he be lusting?
could we be lusting?
could you be lusting?
could they be lusting? 	could I have lusted?
could you have lusted?
could he have lusted?
could we have lusted?
could you have lusted?
could they have lusted? 	could I have been lusting?
could you have been lusting?
could he have been lusting?
could we have been lusting?
could you have been lusting?
could they have been lusting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I lust?
couldn't you lust?
couldn't he lust?
couldn't we lust?
couldn't you lust?
couldn't they lust? 	couldn't I be lusting?
couldn't you be lusting?
couldn't he be lusting?
couldn't we be lusting?
couldn't you be lusting?
couldn't they be lusting? 	couldn't I have lusted?
couldn't you have lusted?
couldn't he have lusted?
couldn't we have lusted?
couldn't you have lusted?
couldn't they have lusted? 	couldn't I have been lusting?
couldn't you have been lusting?
couldn't he have been lusting?
couldn't we have been lusting?
couldn't you have been lusting?
couldn't they have been lusting?