English verb conjugation
CAN MUSS

Regular verb: muss - mussed - mussed

Affirmation

Simple form	V-ing form
I can muss you can muss she can muss we can muss you can muss they can muss	I can be mussing you can be mussing she can be mussing we can be mussing you can be mussing they can be mussing
Perfect	V-ing perfect
I can have mussed you can have mussed she can have mussed we can have mussed you can have mussed they can have mussed	I can have been mussing you can have been mussing she can have been mussing we can have been mussing you can have been mussing they can have been mussing

Negation

Simple form	V-ing form
I cannot muss you cannot muss she cannot muss we cannot muss you cannot muss they cannot muss	I cannot be mussing you cannot be mussing she cannot be mussing we cannot be mussing you cannot be mussing they cannot be mussing
Perfect	V-ing perfect
I cannot have mussed you cannot have mussed she cannot have mussed we cannot have mussed you cannot have mussed they cannot have mussed	I cannot have been mussing you cannot have been mussing she cannot have been mussing we cannot have been mussing you cannot have been mussing they cannot have been mussing

Interrogative form

Simple form	V-ing form
can I muss? can you muss? can she muss? can we muss? can you muss? can they muss?	can I be mussing? can you be mussing? can she be mussing? can we be mussing? can you be mussing? can they be mussing?
Perfect	V-ing perfect
can I have mussed? can you have mussed? can she have mussed? can we have mussed? can you have mussed? can they have mussed?	can I have been mussing? can you have been mussing? can she have been mussing? can we have been mussing? can you have been mussing? can they have been mussing?

Interro-negative form

Simple form	V-ing form
can I not muss? can you not muss? can she not muss? can we not muss? can you not muss? can they not muss?	can I not be mussing? can you not be mussing? can she not be mussing? can we not be mussing? can you not be mussing? can they not be mussing?
Perfect	V-ing perfect
can I not have mussed? can you not have mussed? can she not have mussed? can we not have mussed? can you not have mussed? can they not have mussed?	can I not have been mussing? can you not have been mussing? can she not have been mussing? can we not have been mussing? can you not have been mussing? can they not have been mussing?