I could engender you could engender he could engender we could engender you could engender they could engender
V-ing form
I could be engendering you could be engendering he could be engendering we could be engendering you could be engendering they could be engendering
Perfect
I could have engendered you could have engendered he could have engendered we could have engendered you could have engendered they could have engendered
V-ing perfect
I could have been engendering you could have been engendering he could have been engendering we could have been engendering you could have been engendering they could have been engendering
Negation
Simple form
I couldn't engender you couldn't engender he couldn't engender we couldn't engender you couldn't engender they couldn't engender
V-ing form
I couldn't be engendering you couldn't be engendering he couldn't be engendering we couldn't be engendering you couldn't be engendering they couldn't be engendering
Perfect
I couldn't have engendered you couldn't have engendered he couldn't have engendered we couldn't have engendered you couldn't have engendered they couldn't have engendered
V-ing perfect
I couldn't have been engendering you couldn't have been engendering he couldn't have been engendering we couldn't have been engendering you couldn't have been engendering they couldn't have been engendering
Interrogative form
Simple form
could I engender? could you engender? could he engender? could we engender? could you engender? could they engender?
V-ing form
could I be engendering? could you be engendering? could he be engendering? could we be engendering? could you be engendering? could they be engendering?
Perfect
could I have engendered? could you have engendered? could he have engendered? could we have engendered? could you have engendered? could they have engendered?
V-ing perfect
could I have been engendering? could you have been engendering? could he have been engendering? could we have been engendering? could you have been engendering? could they have been engendering?
Interro-negative form
Simple form
couldn't I engender? couldn't you engender? couldn't he engender? couldn't we engender? couldn't you engender? couldn't they engender?
V-ing form
couldn't I be engendering? couldn't you be engendering? couldn't he be engendering? couldn't we be engendering? couldn't you be engendering? couldn't they be engendering?
Perfect
couldn't I have engendered? couldn't you have engendered? couldn't he have engendered? couldn't we have engendered? couldn't you have engendered? couldn't they have engendered?
V-ing perfect
couldn't I have been engendering? couldn't you have been engendering? couldn't he have been engendering? couldn't we have been engendering? couldn't you have been engendering? couldn't they have been engendering?