can contemplate
Regular verb: contemplate - contemplated- contemplated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can contemplate
you can contemplate
she can contemplate
we can contemplate
you can contemplate
they can contemplate 	I can be contemplating
you can be contemplating
she can be contemplating
we can be contemplating
you can be contemplating
they can be contemplating	I can have contemplated
you can have contemplated
she can have contemplated
we can have contemplated
you can have contemplated
they can have contemplated	I can have been contemplating
you can have been contemplating
she can have been contemplating
we can have been contemplating
you can have been contemplating
they can have been contemplating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot contemplate
you cannot contemplate
she cannot contemplate
we cannot contemplate
you cannot contemplate
they cannot contemplate 	I cannot be contemplating
you cannot be contemplating
she cannot be contemplating
we cannot be contemplating
you cannot be contemplating
they cannot be contemplating	I cannot have contemplated
you cannot have contemplated
she cannot have contemplated
we cannot have contemplated
you cannot have contemplated
they cannot have contemplated	I cannot have been contemplating
you cannot have been contemplating
she cannot have been contemplating
we cannot have been contemplating
you cannot have been contemplating
they cannot have been contemplating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I contemplate?
can you contemplate?
can she contemplate?
can we contemplate?
can you contemplate?
can they contemplate? 	can I be contemplating?
can you be contemplating?
can she be contemplating?
can we be contemplating?
can you be contemplating?
can they be contemplating? 	can I have contemplated?
can you have contemplated?
can she have contemplated?
can we have contemplated?
can you have contemplated?
can they have contemplated? 	can I have been contemplating?
can you have been contemplating?
can she have been contemplating?
can we have been contemplating?
can you have been contemplating?
can they have been contemplating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not contemplate?
can you not contemplate?
can she not contemplate?
can we not contemplate?
can you not contemplate?
can they not contemplate? 	can I not be contemplating?
can you not be contemplating?
can she not be contemplating?
can we not be contemplating?
can you not be contemplating?
can they not be contemplating? 	can I not have contemplated?
can you not have contemplated?
can she not have contemplated?
can we not have contemplated?
can you not have contemplated?
can they not have contemplated? 	can I not have been contemplating?
can you not have been contemplating?
can she not have been contemplating?
can we not have been contemplating?
can you not have been contemplating?
can they not have been contemplating?