I can configure you can configure he can configure we can configure you can configure they can configure
V-ing form
I can be configuring you can be configuring he can be configuring we can be configuring you can be configuring they can be configuring
Perfect
I can have configured you can have configured he can have configured we can have configured you can have configured they can have configured
V-ing perfect
I can have been configuring you can have been configuring he can have been configuring we can have been configuring you can have been configuring they can have been configuring
Negation
Simple form
I cannot configure you cannot configure he cannot configure we cannot configure you cannot configure they cannot configure
V-ing form
I cannot be configuring you cannot be configuring he cannot be configuring we cannot be configuring you cannot be configuring they cannot be configuring
Perfect
I cannot have configured you cannot have configured he cannot have configured we cannot have configured you cannot have configured they cannot have configured
V-ing perfect
I cannot have been configuring you cannot have been configuring he cannot have been configuring we cannot have been configuring you cannot have been configuring they cannot have been configuring
Interrogative form
Simple form
can I configure? can you configure? can he configure? can we configure? can you configure? can they configure?
V-ing form
can I be configuring? can you be configuring? can he be configuring? can we be configuring? can you be configuring? can they be configuring?
Perfect
can I have configured? can you have configured? can he have configured? can we have configured? can you have configured? can they have configured?
V-ing perfect
can I have been configuring? can you have been configuring? can he have been configuring? can we have been configuring? can you have been configuring? can they have been configuring?
Interro-negative form
Simple form
can I not configure? can you not configure? can he not configure? can we not configure? can you not configure? can they not configure?
V-ing form
can I not be configuring? can you not be configuring? can he not be configuring? can we not be configuring? can you not be configuring? can they not be configuring?
Perfect
can I not have configured? can you not have configured? can he not have configured? can we not have configured? can you not have configured? can they not have configured?
V-ing perfect
can I not have been configuring? can you not have been configuring? can he not have been configuring? can we not have been configuring? can you not have been configuring? can they not have been configuring?