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