can reckon
Regular verb: reckon - reckoned- reckoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can reckon
you can reckon
she can reckon
we can reckon
you can reckon
they can reckon 	I can be reckoning
you can be reckoning
she can be reckoning
we can be reckoning
you can be reckoning
they can be reckoning	I can have reckoned
you can have reckoned
she can have reckoned
we can have reckoned
you can have reckoned
they can have reckoned	I can have been reckoning
you can have been reckoning
she can have been reckoning
we can have been reckoning
you can have been reckoning
they can have been reckoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot reckon
you cannot reckon
she cannot reckon
we cannot reckon
you cannot reckon
they cannot reckon 	I cannot be reckoning
you cannot be reckoning
she cannot be reckoning
we cannot be reckoning
you cannot be reckoning
they cannot be reckoning	I cannot have reckoned
you cannot have reckoned
she cannot have reckoned
we cannot have reckoned
you cannot have reckoned
they cannot have reckoned	I cannot have been reckoning
you cannot have been reckoning
she cannot have been reckoning
we cannot have been reckoning
you cannot have been reckoning
they cannot have been reckoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I reckon?
can you reckon?
can she reckon?
can we reckon?
can you reckon?
can they reckon? 	can I be reckoning?
can you be reckoning?
can she be reckoning?
can we be reckoning?
can you be reckoning?
can they be reckoning? 	can I have reckoned?
can you have reckoned?
can she have reckoned?
can we have reckoned?
can you have reckoned?
can they have reckoned? 	can I have been reckoning?
can you have been reckoning?
can she have been reckoning?
can we have been reckoning?
can you have been reckoning?
can they have been reckoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not reckon?
can you not reckon?
can she not reckon?
can we not reckon?
can you not reckon?
can they not reckon? 	can I not be reckoning?
can you not be reckoning?
can she not be reckoning?
can we not be reckoning?
can you not be reckoning?
can they not be reckoning? 	can I not have reckoned?
can you not have reckoned?
can she not have reckoned?
can we not have reckoned?
can you not have reckoned?
can they not have reckoned? 	can I not have been reckoning?
can you not have been reckoning?
can she not have been reckoning?
can we not have been reckoning?
can you not have been reckoning?
can they not have been reckoning?