can contemplate
Regular verb: contemplate - contemplated- contemplated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can contemplate
you can contemplate
he can contemplate
we can contemplate
you can contemplate
they can contemplate 	I can be contemplating
you can be contemplating
he can be contemplating
we can be contemplating
you can be contemplating
they can be contemplating	I can have contemplated
you can have contemplated
he 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
he 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 can't contemplate
you can't contemplate
he can't contemplate
we can't contemplate
you can't contemplate
they can't contemplate 	I can't be contemplating
you can't be contemplating
he can't be contemplating
we can't be contemplating
you can't be contemplating
they can't be contemplating	I can't have contemplated
you can't have contemplated
he can't have contemplated
we can't have contemplated
you can't have contemplated
they can't have contemplated	I can't have been contemplating
you can't have been contemplating
he can't have been contemplating
we can't have been contemplating
you can't have been contemplating
they can't have been contemplating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I contemplate?
can you contemplate?
can he contemplate?
can we contemplate?
can you contemplate?
can they contemplate? 	can I be contemplating?
can you be contemplating?
can he be contemplating?
can we be contemplating?
can you be contemplating?
can they be contemplating? 	can I have contemplated?
can you have contemplated?
can he 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 he 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't I contemplate?
can't you contemplate?
can't he contemplate?
can't we contemplate?
can't you contemplate?
can't they contemplate? 	can't I be contemplating?
can't you be contemplating?
can't he be contemplating?
can't we be contemplating?
can't you be contemplating?
can't they be contemplating? 	can't I have contemplated?
can't you have contemplated?
can't he have contemplated?
can't we have contemplated?
can't you have contemplated?
can't they have contemplated? 	can't I have been contemplating?
can't you have been contemplating?
can't he have been contemplating?
can't we have been contemplating?
can't you have been contemplating?
can't they have been contemplating?