could asterisk
Regular verb: asterisk - asterisked- asterisked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could asterisk
you could asterisk
she could asterisk
we could asterisk
you could asterisk
they could asterisk 	I could be asterisking
you could be asterisking
she could be asterisking
we could be asterisking
you could be asterisking
they could be asterisking	I could have asterisked
you could have asterisked
she could have asterisked
we could have asterisked
you could have asterisked
they could have asterisked	I could have been asterisking
you could have been asterisking
she could have been asterisking
we could have been asterisking
you could have been asterisking
they could have been asterisking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't asterisk
you couldn't asterisk
she couldn't asterisk
we couldn't asterisk
you couldn't asterisk
they couldn't asterisk 	I couldn't be asterisking
you couldn't be asterisking
she couldn't be asterisking
we couldn't be asterisking
you couldn't be asterisking
they couldn't be asterisking	I couldn't have asterisked
you couldn't have asterisked
she couldn't have asterisked
we couldn't have asterisked
you couldn't have asterisked
they couldn't have asterisked	I couldn't have been asterisking
you couldn't have been asterisking
she couldn't have been asterisking
we couldn't have been asterisking
you couldn't have been asterisking
they couldn't have been asterisking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I asterisk?
could you asterisk?
could she asterisk?
could we asterisk?
could you asterisk?
could they asterisk? 	could I be asterisking?
could you be asterisking?
could she be asterisking?
could we be asterisking?
could you be asterisking?
could they be asterisking? 	could I have asterisked?
could you have asterisked?
could she have asterisked?
could we have asterisked?
could you have asterisked?
could they have asterisked? 	could I have been asterisking?
could you have been asterisking?
could she have been asterisking?
could we have been asterisking?
could you have been asterisking?
could they have been asterisking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I asterisk?
couldn't you asterisk?
couldn't she asterisk?
couldn't we asterisk?
couldn't you asterisk?
couldn't they asterisk? 	couldn't I be asterisking?
couldn't you be asterisking?
couldn't she be asterisking?
couldn't we be asterisking?
couldn't you be asterisking?
couldn't they be asterisking? 	couldn't I have asterisked?
couldn't you have asterisked?
couldn't she have asterisked?
couldn't we have asterisked?
couldn't you have asterisked?
couldn't they have asterisked? 	couldn't I have been asterisking?
couldn't you have been asterisking?
couldn't she have been asterisking?
couldn't we have been asterisking?
couldn't you have been asterisking?
couldn't they have been asterisking?