could gauge
Regular verb: gauge - gauged- gauged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could gauge
you could gauge
he could gauge
we could gauge
you could gauge
they could gauge 	I could be gauging
you could be gauging
he could be gauging
we could be gauging
you could be gauging
they could be gauging	I could have gauged
you could have gauged
he could have gauged
we could have gauged
you could have gauged
they could have gauged	I could have been gauging
you could have been gauging
he could have been gauging
we could have been gauging
you could have been gauging
they could have been gauging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not gauge
you could not gauge
he could not gauge
we could not gauge
you could not gauge
they could not gauge 	I could not be gauging
you could not be gauging
he could not be gauging
we could not be gauging
you could not be gauging
they could not be gauging	I could not have gauged
you could not have gauged
he could not have gauged
we could not have gauged
you could not have gauged
they could not have gauged	I could not have been gauging
you could not have been gauging
he could not have been gauging
we could not have been gauging
you could not have been gauging
they could not have been gauging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gauge?
could you gauge?
could he gauge?
could we gauge?
could you gauge?
could they gauge? 	could I be gauging?
could you be gauging?
could he be gauging?
could we be gauging?
could you be gauging?
could they be gauging? 	could I have gauged?
could you have gauged?
could he have gauged?
could we have gauged?
could you have gauged?
could they have gauged? 	could I have been gauging?
could you have been gauging?
could he have been gauging?
could we have been gauging?
could you have been gauging?
could they have been gauging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not gauge?
could you not gauge?
could he not gauge?
could we not gauge?
could you not gauge?
could they not gauge? 	could I not be gauging?
could you not be gauging?
could he not be gauging?
could we not be gauging?
could you not be gauging?
could they not be gauging? 	could I not have gauged?
could you not have gauged?
could he not have gauged?
could we not have gauged?
could you not have gauged?
could they not have gauged? 	could I not have been gauging?
could you not have been gauging?
could he not have been gauging?
could we not have been gauging?
could you not have been gauging?
could they not have been gauging?