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