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