could bask
Regular verb: bask - basked- basked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bask
you could bask
she could bask
we could bask
you could bask
they could bask 	I could be basking
you could be basking
she could be basking
we could be basking
you could be basking
they could be basking	I could have basked
you could have basked
she could have basked
we could have basked
you could have basked
they could have basked	I could have been basking
you could have been basking
she could have been basking
we could have been basking
you could have been basking
they could have been basking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bask
you couldn't bask
she couldn't bask
we couldn't bask
you couldn't bask
they couldn't bask 	I couldn't be basking
you couldn't be basking
she couldn't be basking
we couldn't be basking
you couldn't be basking
they couldn't be basking	I couldn't have basked
you couldn't have basked
she couldn't have basked
we couldn't have basked
you couldn't have basked
they couldn't have basked	I couldn't have been basking
you couldn't have been basking
she couldn't have been basking
we couldn't have been basking
you couldn't have been basking
they couldn't have been basking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bask?
could you bask?
could she bask?
could we bask?
could you bask?
could they bask? 	could I be basking?
could you be basking?
could she be basking?
could we be basking?
could you be basking?
could they be basking? 	could I have basked?
could you have basked?
could she have basked?
could we have basked?
could you have basked?
could they have basked? 	could I have been basking?
could you have been basking?
could she have been basking?
could we have been basking?
could you have been basking?
could they have been basking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bask?
couldn't you bask?
couldn't she bask?
couldn't we bask?
couldn't you bask?
couldn't they bask? 	couldn't I be basking?
couldn't you be basking?
couldn't she be basking?
couldn't we be basking?
couldn't you be basking?
couldn't they be basking? 	couldn't I have basked?
couldn't you have basked?
couldn't she have basked?
couldn't we have basked?
couldn't you have basked?
couldn't they have basked? 	couldn't I have been basking?
couldn't you have been basking?
couldn't she have been basking?
couldn't we have been basking?
couldn't you have been basking?
couldn't they have been basking?