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