could waitress
Regular verb: waitress - waitressed- waitressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could waitress
you could waitress
she could waitress
we could waitress
you could waitress
they could waitress 	I could be waitressing
you could be waitressing
she could be waitressing
we could be waitressing
you could be waitressing
they could be waitressing	I could have waitressed
you could have waitressed
she could have waitressed
we could have waitressed
you could have waitressed
they could have waitressed	I could have been waitressing
you could have been waitressing
she could have been waitressing
we could have been waitressing
you could have been waitressing
they could have been waitressing	

Negation 	
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I couldn't waitress
you couldn't waitress
she couldn't waitress
we couldn't waitress
you couldn't waitress
they couldn't waitress 	I couldn't be waitressing
you couldn't be waitressing
she couldn't be waitressing
we couldn't be waitressing
you couldn't be waitressing
they couldn't be waitressing	I couldn't have waitressed
you couldn't have waitressed
she couldn't have waitressed
we couldn't have waitressed
you couldn't have waitressed
they couldn't have waitressed	I couldn't have been waitressing
you couldn't have been waitressing
she couldn't have been waitressing
we couldn't have been waitressing
you couldn't have been waitressing
they couldn't have been waitressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I waitress?
could you waitress?
could she waitress?
could we waitress?
could you waitress?
could they waitress? 	could I be waitressing?
could you be waitressing?
could she be waitressing?
could we be waitressing?
could you be waitressing?
could they be waitressing? 	could I have waitressed?
could you have waitressed?
could she have waitressed?
could we have waitressed?
could you have waitressed?
could they have waitressed? 	could I have been waitressing?
could you have been waitressing?
could she have been waitressing?
could we have been waitressing?
could you have been waitressing?
could they have been waitressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I waitress?
couldn't you waitress?
couldn't she waitress?
couldn't we waitress?
couldn't you waitress?
couldn't they waitress? 	couldn't I be waitressing?
couldn't you be waitressing?
couldn't she be waitressing?
couldn't we be waitressing?
couldn't you be waitressing?
couldn't they be waitressing? 	couldn't I have waitressed?
couldn't you have waitressed?
couldn't she have waitressed?
couldn't we have waitressed?
couldn't you have waitressed?
couldn't they have waitressed? 	couldn't I have been waitressing?
couldn't you have been waitressing?
couldn't she have been waitressing?
couldn't we have been waitressing?
couldn't you have been waitressing?
couldn't they have been waitressing?