can pattern
Regular verb: pattern - patterned- patterned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pattern
you can pattern
she can pattern
we can pattern
you can pattern
they can pattern 	I can be patterning
you can be patterning
she can be patterning
we can be patterning
you can be patterning
they can be patterning	I can have patterned
you can have patterned
she can have patterned
we can have patterned
you can have patterned
they can have patterned	I can have been patterning
you can have been patterning
she can have been patterning
we can have been patterning
you can have been patterning
they can have been patterning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot pattern
you cannot pattern
she cannot pattern
we cannot pattern
you cannot pattern
they cannot pattern 	I cannot be patterning
you cannot be patterning
she cannot be patterning
we cannot be patterning
you cannot be patterning
they cannot be patterning	I cannot have patterned
you cannot have patterned
she cannot have patterned
we cannot have patterned
you cannot have patterned
they cannot have patterned	I cannot have been patterning
you cannot have been patterning
she cannot have been patterning
we cannot have been patterning
you cannot have been patterning
they cannot have been patterning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I pattern?
can you pattern?
can she pattern?
can we pattern?
can you pattern?
can they pattern? 	can I be patterning?
can you be patterning?
can she be patterning?
can we be patterning?
can you be patterning?
can they be patterning? 	can I have patterned?
can you have patterned?
can she have patterned?
can we have patterned?
can you have patterned?
can they have patterned? 	can I have been patterning?
can you have been patterning?
can she have been patterning?
can we have been patterning?
can you have been patterning?
can they have been patterning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not pattern?
can you not pattern?
can she not pattern?
can we not pattern?
can you not pattern?
can they not pattern? 	can I not be patterning?
can you not be patterning?
can she not be patterning?
can we not be patterning?
can you not be patterning?
can they not be patterning? 	can I not have patterned?
can you not have patterned?
can she not have patterned?
can we not have patterned?
can you not have patterned?
can they not have patterned? 	can I not have been patterning?
can you not have been patterning?
can she not have been patterning?
can we not have been patterning?
can you not have been patterning?
can they not have been patterning?