can discontinue
Regular verb: discontinue - discontinued- discontinued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can discontinue
you can discontinue
she can discontinue
we can discontinue
you can discontinue
they can discontinue 	I can be discontinuing
you can be discontinuing
she can be discontinuing
we can be discontinuing
you can be discontinuing
they can be discontinuing	I can have discontinued
you can have discontinued
she can have discontinued
we can have discontinued
you can have discontinued
they can have discontinued	I can have been discontinuing
you can have been discontinuing
she can have been discontinuing
we can have been discontinuing
you can have been discontinuing
they can have been discontinuing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot discontinue
you cannot discontinue
she cannot discontinue
we cannot discontinue
you cannot discontinue
they cannot discontinue 	I cannot be discontinuing
you cannot be discontinuing
she cannot be discontinuing
we cannot be discontinuing
you cannot be discontinuing
they cannot be discontinuing	I cannot have discontinued
you cannot have discontinued
she cannot have discontinued
we cannot have discontinued
you cannot have discontinued
they cannot have discontinued	I cannot have been discontinuing
you cannot have been discontinuing
she cannot have been discontinuing
we cannot have been discontinuing
you cannot have been discontinuing
they cannot have been discontinuing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I discontinue?
can you discontinue?
can she discontinue?
can we discontinue?
can you discontinue?
can they discontinue? 	can I be discontinuing?
can you be discontinuing?
can she be discontinuing?
can we be discontinuing?
can you be discontinuing?
can they be discontinuing? 	can I have discontinued?
can you have discontinued?
can she have discontinued?
can we have discontinued?
can you have discontinued?
can they have discontinued? 	can I have been discontinuing?
can you have been discontinuing?
can she have been discontinuing?
can we have been discontinuing?
can you have been discontinuing?
can they have been discontinuing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not discontinue?
can you not discontinue?
can she not discontinue?
can we not discontinue?
can you not discontinue?
can they not discontinue? 	can I not be discontinuing?
can you not be discontinuing?
can she not be discontinuing?
can we not be discontinuing?
can you not be discontinuing?
can they not be discontinuing? 	can I not have discontinued?
can you not have discontinued?
can she not have discontinued?
can we not have discontinued?
can you not have discontinued?
can they not have discontinued? 	can I not have been discontinuing?
can you not have been discontinuing?
can she not have been discontinuing?
can we not have been discontinuing?
can you not have been discontinuing?
can they not have been discontinuing?