can thieve
Regular verb: thieve - thieved- thieved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can thieve
you can thieve
he can thieve
we can thieve
you can thieve
they can thieve 	I can be thieving
you can be thieving
he can be thieving
we can be thieving
you can be thieving
they can be thieving	I can have thieved
you can have thieved
he can have thieved
we can have thieved
you can have thieved
they can have thieved	I can have been thieving
you can have been thieving
he can have been thieving
we can have been thieving
you can have been thieving
they can have been thieving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot thieve
you cannot thieve
he cannot thieve
we cannot thieve
you cannot thieve
they cannot thieve 	I cannot be thieving
you cannot be thieving
he cannot be thieving
we cannot be thieving
you cannot be thieving
they cannot be thieving	I cannot have thieved
you cannot have thieved
he cannot have thieved
we cannot have thieved
you cannot have thieved
they cannot have thieved	I cannot have been thieving
you cannot have been thieving
he cannot have been thieving
we cannot have been thieving
you cannot have been thieving
they cannot have been thieving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I thieve?
can you thieve?
can he thieve?
can we thieve?
can you thieve?
can they thieve? 	can I be thieving?
can you be thieving?
can he be thieving?
can we be thieving?
can you be thieving?
can they be thieving? 	can I have thieved?
can you have thieved?
can he have thieved?
can we have thieved?
can you have thieved?
can they have thieved? 	can I have been thieving?
can you have been thieving?
can he have been thieving?
can we have been thieving?
can you have been thieving?
can they have been thieving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not thieve?
can you not thieve?
can he not thieve?
can we not thieve?
can you not thieve?
can they not thieve? 	can I not be thieving?
can you not be thieving?
can he not be thieving?
can we not be thieving?
can you not be thieving?
can they not be thieving? 	can I not have thieved?
can you not have thieved?
can he not have thieved?
can we not have thieved?
can you not have thieved?
can they not have thieved? 	can I not have been thieving?
can you not have been thieving?
can he not have been thieving?
can we not have been thieving?
can you not have been thieving?
can they not have been thieving?