could underfeed
Irregular verb: underfeed - underfed- underfed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could underfeed
you could underfeed
he could underfeed
we could underfeed
you could underfeed
they could underfeed 	I could be underfeeding
you could be underfeeding
he could be underfeeding
we could be underfeeding
you could be underfeeding
they could be underfeeding	I could have underfed
you could have underfed
he could have underfed
we could have underfed
you could have underfed
they could have underfed	I could have been underfeeding
you could have been underfeeding
he could have been underfeeding
we could have been underfeeding
you could have been underfeeding
they could have been underfeeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not underfeed
you could not underfeed
he could not underfeed
we could not underfeed
you could not underfeed
they could not underfeed 	I could not be underfeeding
you could not be underfeeding
he could not be underfeeding
we could not be underfeeding
you could not be underfeeding
they could not be underfeeding	I could not have underfed
you could not have underfed
he could not have underfed
we could not have underfed
you could not have underfed
they could not have underfed	I could not have been underfeeding
you could not have been underfeeding
he could not have been underfeeding
we could not have been underfeeding
you could not have been underfeeding
they could not have been underfeeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I underfeed?
could you underfeed?
could he underfeed?
could we underfeed?
could you underfeed?
could they underfeed? 	could I be underfeeding?
could you be underfeeding?
could he be underfeeding?
could we be underfeeding?
could you be underfeeding?
could they be underfeeding? 	could I have underfed?
could you have underfed?
could he have underfed?
could we have underfed?
could you have underfed?
could they have underfed? 	could I have been underfeeding?
could you have been underfeeding?
could he have been underfeeding?
could we have been underfeeding?
could you have been underfeeding?
could they have been underfeeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not underfeed?
could you not underfeed?
could he not underfeed?
could we not underfeed?
could you not underfeed?
could they not underfeed? 	could I not be underfeeding?
could you not be underfeeding?
could he not be underfeeding?
could we not be underfeeding?
could you not be underfeeding?
could they not be underfeeding? 	could I not have underfed?
could you not have underfed?
could he not have underfed?
could we not have underfed?
could you not have underfed?
could they not have underfed? 	could I not have been underfeeding?
could you not have been underfeeding?
could he not have been underfeeding?
could we not have been underfeeding?
could you not have been underfeeding?
could they not have been underfeeding?