could swish
Regular verb: swish - swished- swished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could swish
you could swish
she could swish
we could swish
you could swish
they could swish 	I could be swishing
you could be swishing
she could be swishing
we could be swishing
you could be swishing
they could be swishing	I could have swished
you could have swished
she could have swished
we could have swished
you could have swished
they could have swished	I could have been swishing
you could have been swishing
she could have been swishing
we could have been swishing
you could have been swishing
they could have been swishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not swish
you could not swish
she could not swish
we could not swish
you could not swish
they could not swish 	I could not be swishing
you could not be swishing
she could not be swishing
we could not be swishing
you could not be swishing
they could not be swishing	I could not have swished
you could not have swished
she could not have swished
we could not have swished
you could not have swished
they could not have swished	I could not have been swishing
you could not have been swishing
she could not have been swishing
we could not have been swishing
you could not have been swishing
they could not have been swishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I swish?
could you swish?
could she swish?
could we swish?
could you swish?
could they swish? 	could I be swishing?
could you be swishing?
could she be swishing?
could we be swishing?
could you be swishing?
could they be swishing? 	could I have swished?
could you have swished?
could she have swished?
could we have swished?
could you have swished?
could they have swished? 	could I have been swishing?
could you have been swishing?
could she have been swishing?
could we have been swishing?
could you have been swishing?
could they have been swishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not swish?
could you not swish?
could she not swish?
could we not swish?
could you not swish?
could they not swish? 	could I not be swishing?
could you not be swishing?
could she not be swishing?
could we not be swishing?
could you not be swishing?
could they not be swishing? 	could I not have swished?
could you not have swished?
could she not have swished?
could we not have swished?
could you not have swished?
could they not have swished? 	could I not have been swishing?
could you not have been swishing?
could she not have been swishing?
could we not have been swishing?
could you not have been swishing?
could they not have been swishing?