could conceive
Regular verb: conceive - conceived- conceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could conceive
you could conceive
he could conceive
we could conceive
you could conceive
they could conceive 	I could be conceiving
you could be conceiving
he could be conceiving
we could be conceiving
you could be conceiving
they could be conceiving	I could have conceived
you could have conceived
he could have conceived
we could have conceived
you could have conceived
they could have conceived	I could have been conceiving
you could have been conceiving
he could have been conceiving
we could have been conceiving
you could have been conceiving
they could have been conceiving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't conceive
you couldn't conceive
he couldn't conceive
we couldn't conceive
you couldn't conceive
they couldn't conceive 	I couldn't be conceiving
you couldn't be conceiving
he couldn't be conceiving
we couldn't be conceiving
you couldn't be conceiving
they couldn't be conceiving	I couldn't have conceived
you couldn't have conceived
he couldn't have conceived
we couldn't have conceived
you couldn't have conceived
they couldn't have conceived	I couldn't have been conceiving
you couldn't have been conceiving
he couldn't have been conceiving
we couldn't have been conceiving
you couldn't have been conceiving
they couldn't have been conceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I conceive?
could you conceive?
could he conceive?
could we conceive?
could you conceive?
could they conceive? 	could I be conceiving?
could you be conceiving?
could he be conceiving?
could we be conceiving?
could you be conceiving?
could they be conceiving? 	could I have conceived?
could you have conceived?
could he have conceived?
could we have conceived?
could you have conceived?
could they have conceived? 	could I have been conceiving?
could you have been conceiving?
could he have been conceiving?
could we have been conceiving?
could you have been conceiving?
could they have been conceiving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I conceive?
couldn't you conceive?
couldn't he conceive?
couldn't we conceive?
couldn't you conceive?
couldn't they conceive? 	couldn't I be conceiving?
couldn't you be conceiving?
couldn't he be conceiving?
couldn't we be conceiving?
couldn't you be conceiving?
couldn't they be conceiving? 	couldn't I have conceived?
couldn't you have conceived?
couldn't he have conceived?
couldn't we have conceived?
couldn't you have conceived?
couldn't they have conceived? 	couldn't I have been conceiving?
couldn't you have been conceiving?
couldn't he have been conceiving?
couldn't we have been conceiving?
couldn't you have been conceiving?
couldn't they have been conceiving?