I could print you could print she could print we could print you could print they could print
V-ing form
I could be printing you could be printing she could be printing we could be printing you could be printing they could be printing
Perfect
I could have printed you could have printed she could have printed we could have printed you could have printed they could have printed
V-ing perfect
I could have been printing you could have been printing she could have been printing we could have been printing you could have been printing they could have been printing
Negation
Simple form
I couldn't print you couldn't print she couldn't print we couldn't print you couldn't print they couldn't print
V-ing form
I couldn't be printing you couldn't be printing she couldn't be printing we couldn't be printing you couldn't be printing they couldn't be printing
Perfect
I couldn't have printed you couldn't have printed she couldn't have printed we couldn't have printed you couldn't have printed they couldn't have printed
V-ing perfect
I couldn't have been printing you couldn't have been printing she couldn't have been printing we couldn't have been printing you couldn't have been printing they couldn't have been printing
Interrogative form
Simple form
could I print? could you print? could she print? could we print? could you print? could they print?
V-ing form
could I be printing? could you be printing? could she be printing? could we be printing? could you be printing? could they be printing?
Perfect
could I have printed? could you have printed? could she have printed? could we have printed? could you have printed? could they have printed?
V-ing perfect
could I have been printing? could you have been printing? could she have been printing? could we have been printing? could you have been printing? could they have been printing?
Interro-negative form
Simple form
couldn't I print? couldn't you print? couldn't she print? couldn't we print? couldn't you print? couldn't they print?
V-ing form
couldn't I be printing? couldn't you be printing? couldn't she be printing? couldn't we be printing? couldn't you be printing? couldn't they be printing?
Perfect
couldn't I have printed? couldn't you have printed? couldn't she have printed? couldn't we have printed? couldn't you have printed? couldn't they have printed?
V-ing perfect
couldn't I have been printing? couldn't you have been printing? couldn't she have been printing? couldn't we have been printing? couldn't you have been printing? couldn't they have been printing?