can leister
Regular verb: leister - leistered- leistered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can leister
you can leister
he can leister
we can leister
you can leister
they can leister 	I can be leistering
you can be leistering
he can be leistering
we can be leistering
you can be leistering
they can be leistering	I can have leistered
you can have leistered
he can have leistered
we can have leistered
you can have leistered
they can have leistered	I can have been leistering
you can have been leistering
he can have been leistering
we can have been leistering
you can have been leistering
they can have been leistering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot leister
you cannot leister
he cannot leister
we cannot leister
you cannot leister
they cannot leister 	I cannot be leistering
you cannot be leistering
he cannot be leistering
we cannot be leistering
you cannot be leistering
they cannot be leistering	I cannot have leistered
you cannot have leistered
he cannot have leistered
we cannot have leistered
you cannot have leistered
they cannot have leistered	I cannot have been leistering
you cannot have been leistering
he cannot have been leistering
we cannot have been leistering
you cannot have been leistering
they cannot have been leistering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I leister?
can you leister?
can he leister?
can we leister?
can you leister?
can they leister? 	can I be leistering?
can you be leistering?
can he be leistering?
can we be leistering?
can you be leistering?
can they be leistering? 	can I have leistered?
can you have leistered?
can he have leistered?
can we have leistered?
can you have leistered?
can they have leistered? 	can I have been leistering?
can you have been leistering?
can he have been leistering?
can we have been leistering?
can you have been leistering?
can they have been leistering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not leister?
can you not leister?
can he not leister?
can we not leister?
can you not leister?
can they not leister? 	can I not be leistering?
can you not be leistering?
can he not be leistering?
can we not be leistering?
can you not be leistering?
can they not be leistering? 	can I not have leistered?
can you not have leistered?
can he not have leistered?
can we not have leistered?
can you not have leistered?
can they not have leistered? 	can I not have been leistering?
can you not have been leistering?
can he not have been leistering?
can we not have been leistering?
can you not have been leistering?
can they not have been leistering?