can drain
Regular verb: drain - drained- drained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can drain
you can drain
she can drain
we can drain
you can drain
they can drain 	I can be draining
you can be draining
she can be draining
we can be draining
you can be draining
they can be draining	I can have drained
you can have drained
she can have drained
we can have drained
you can have drained
they can have drained	I can have been draining
you can have been draining
she can have been draining
we can have been draining
you can have been draining
they can have been draining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't drain
you can't drain
she can't drain
we can't drain
you can't drain
they can't drain 	I can't be draining
you can't be draining
she can't be draining
we can't be draining
you can't be draining
they can't be draining	I can't have drained
you can't have drained
she can't have drained
we can't have drained
you can't have drained
they can't have drained	I can't have been draining
you can't have been draining
she can't have been draining
we can't have been draining
you can't have been draining
they can't have been draining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I drain?
can you drain?
can she drain?
can we drain?
can you drain?
can they drain? 	can I be draining?
can you be draining?
can she be draining?
can we be draining?
can you be draining?
can they be draining? 	can I have drained?
can you have drained?
can she have drained?
can we have drained?
can you have drained?
can they have drained? 	can I have been draining?
can you have been draining?
can she have been draining?
can we have been draining?
can you have been draining?
can they have been draining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I drain?
can't you drain?
can't she drain?
can't we drain?
can't you drain?
can't they drain? 	can't I be draining?
can't you be draining?
can't she be draining?
can't we be draining?
can't you be draining?
can't they be draining? 	can't I have drained?
can't you have drained?
can't she have drained?
can't we have drained?
can't you have drained?
can't they have drained? 	can't I have been draining?
can't you have been draining?
can't she have been draining?
can't we have been draining?
can't you have been draining?
can't they have been draining?