can moss
Regular verb: moss - mossed- mossed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can moss
you can moss
she can moss
we can moss
you can moss
they can moss 	I can be mossing
you can be mossing
she can be mossing
we can be mossing
you can be mossing
they can be mossing	I can have mossed
you can have mossed
she can have mossed
we can have mossed
you can have mossed
they can have mossed	I can have been mossing
you can have been mossing
she can have been mossing
we can have been mossing
you can have been mossing
they can have been mossing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot moss
you cannot moss
she cannot moss
we cannot moss
you cannot moss
they cannot moss 	I cannot be mossing
you cannot be mossing
she cannot be mossing
we cannot be mossing
you cannot be mossing
they cannot be mossing	I cannot have mossed
you cannot have mossed
she cannot have mossed
we cannot have mossed
you cannot have mossed
they cannot have mossed	I cannot have been mossing
you cannot have been mossing
she cannot have been mossing
we cannot have been mossing
you cannot have been mossing
they cannot have been mossing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I moss?
can you moss?
can she moss?
can we moss?
can you moss?
can they moss? 	can I be mossing?
can you be mossing?
can she be mossing?
can we be mossing?
can you be mossing?
can they be mossing? 	can I have mossed?
can you have mossed?
can she have mossed?
can we have mossed?
can you have mossed?
can they have mossed? 	can I have been mossing?
can you have been mossing?
can she have been mossing?
can we have been mossing?
can you have been mossing?
can they have been mossing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not moss?
can you not moss?
can she not moss?
can we not moss?
can you not moss?
can they not moss? 	can I not be mossing?
can you not be mossing?
can she not be mossing?
can we not be mossing?
can you not be mossing?
can they not be mossing? 	can I not have mossed?
can you not have mossed?
can she not have mossed?
can we not have mossed?
can you not have mossed?
can they not have mossed? 	can I not have been mossing?
can you not have been mossing?
can she not have been mossing?
can we not have been mossing?
can you not have been mossing?
can they not have been mossing?