can subtotal
Regular verb: subtotal - subtotaled- subtotaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can subtotal
you can subtotal
she can subtotal
we can subtotal
you can subtotal
they can subtotal 	I can be subtotaling
you can be subtotaling
she can be subtotaling
we can be subtotaling
you can be subtotaling
they can be subtotaling	I can have subtotaled
you can have subtotaled
she can have subtotaled
we can have subtotaled
you can have subtotaled
they can have subtotaled	I can have been subtotaling
you can have been subtotaling
she can have been subtotaling
we can have been subtotaling
you can have been subtotaling
they can have been subtotaling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot subtotal
you cannot subtotal
she cannot subtotal
we cannot subtotal
you cannot subtotal
they cannot subtotal 	I cannot be subtotaling
you cannot be subtotaling
she cannot be subtotaling
we cannot be subtotaling
you cannot be subtotaling
they cannot be subtotaling	I cannot have subtotaled
you cannot have subtotaled
she cannot have subtotaled
we cannot have subtotaled
you cannot have subtotaled
they cannot have subtotaled	I cannot have been subtotaling
you cannot have been subtotaling
she cannot have been subtotaling
we cannot have been subtotaling
you cannot have been subtotaling
they cannot have been subtotaling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I subtotal?
can you subtotal?
can she subtotal?
can we subtotal?
can you subtotal?
can they subtotal? 	can I be subtotaling?
can you be subtotaling?
can she be subtotaling?
can we be subtotaling?
can you be subtotaling?
can they be subtotaling? 	can I have subtotaled?
can you have subtotaled?
can she have subtotaled?
can we have subtotaled?
can you have subtotaled?
can they have subtotaled? 	can I have been subtotaling?
can you have been subtotaling?
can she have been subtotaling?
can we have been subtotaling?
can you have been subtotaling?
can they have been subtotaling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not subtotal?
can you not subtotal?
can she not subtotal?
can we not subtotal?
can you not subtotal?
can they not subtotal? 	can I not be subtotaling?
can you not be subtotaling?
can she not be subtotaling?
can we not be subtotaling?
can you not be subtotaling?
can they not be subtotaling? 	can I not have subtotaled?
can you not have subtotaled?
can she not have subtotaled?
can we not have subtotaled?
can you not have subtotaled?
can they not have subtotaled? 	can I not have been subtotaling?
can you not have been subtotaling?
can she not have been subtotaling?
can we not have been subtotaling?
can you not have been subtotaling?
can they not have been subtotaling?