could beg
Regular verb: beg - begged- begged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could beg
you could beg
she could beg
we could beg
you could beg
they could beg 	I could be begging
you could be begging
she could be begging
we could be begging
you could be begging
they could be begging	I could have begged
you could have begged
she could have begged
we could have begged
you could have begged
they could have begged	I could have been begging
you could have been begging
she could have been begging
we could have been begging
you could have been begging
they could have been begging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not beg
you could not beg
she could not beg
we could not beg
you could not beg
they could not beg 	I could not be begging
you could not be begging
she could not be begging
we could not be begging
you could not be begging
they could not be begging	I could not have begged
you could not have begged
she could not have begged
we could not have begged
you could not have begged
they could not have begged	I could not have been begging
you could not have been begging
she could not have been begging
we could not have been begging
you could not have been begging
they could not have been begging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I beg?
could you beg?
could she beg?
could we beg?
could you beg?
could they beg? 	could I be begging?
could you be begging?
could she be begging?
could we be begging?
could you be begging?
could they be begging? 	could I have begged?
could you have begged?
could she have begged?
could we have begged?
could you have begged?
could they have begged? 	could I have been begging?
could you have been begging?
could she have been begging?
could we have been begging?
could you have been begging?
could they have been begging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not beg?
could you not beg?
could she not beg?
could we not beg?
could you not beg?
could they not beg? 	could I not be begging?
could you not be begging?
could she not be begging?
could we not be begging?
could you not be begging?
could they not be begging? 	could I not have begged?
could you not have begged?
could she not have begged?
could we not have begged?
could you not have begged?
could they not have begged? 	could I not have been begging?
could you not have been begging?
could she not have been begging?
could we not have been begging?
could you not have been begging?
could they not have been begging?