I can configure you can configure she can configure we can configure you can configure they can configure
V-ing form
I can be configuring you can be configuring she can be configuring we can be configuring you can be configuring they can be configuring
Perfect
I can have configured you can have configured she 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 she can have been configuring we can have been configuring you can have been configuring they can have been configuring
Negation
Simple form
I can't configure you can't configure she can't configure we can't configure you can't configure they can't configure
V-ing form
I can't be configuring you can't be configuring she can't be configuring we can't be configuring you can't be configuring they can't be configuring
Perfect
I can't have configured you can't have configured she can't have configured we can't have configured you can't have configured they can't have configured
V-ing perfect
I can't have been configuring you can't have been configuring she can't have been configuring we can't have been configuring you can't have been configuring they can't have been configuring
Interrogative form
Simple form
can I configure? can you configure? can she configure? can we configure? can you configure? can they configure?
V-ing form
can I be configuring? can you be configuring? can she be configuring? can we be configuring? can you be configuring? can they be configuring?
Perfect
can I have configured? can you have configured? can she 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 she have been configuring? can we have been configuring? can you have been configuring? can they have been configuring?
Interro-negative form
Simple form
can't I configure? can't you configure? can't she configure? can't we configure? can't you configure? can't they configure?
V-ing form
can't I be configuring? can't you be configuring? can't she be configuring? can't we be configuring? can't you be configuring? can't they be configuring?
Perfect
can't I have configured? can't you have configured? can't she have configured? can't we have configured? can't you have configured? can't they have configured?
V-ing perfect
can't I have been configuring? can't you have been configuring? can't she have been configuring? can't we have been configuring? can't you have been configuring? can't they have been configuring?