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