could starch
Regular verb: starch - starched- starched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could starch
you could starch
he could starch
we could starch
you could starch
they could starch 	I could be starching
you could be starching
he could be starching
we could be starching
you could be starching
they could be starching	I could have starched
you could have starched
he could have starched
we could have starched
you could have starched
they could have starched	I could have been starching
you could have been starching
he could have been starching
we could have been starching
you could have been starching
they could have been starching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't starch
you couldn't starch
he couldn't starch
we couldn't starch
you couldn't starch
they couldn't starch 	I couldn't be starching
you couldn't be starching
he couldn't be starching
we couldn't be starching
you couldn't be starching
they couldn't be starching	I couldn't have starched
you couldn't have starched
he couldn't have starched
we couldn't have starched
you couldn't have starched
they couldn't have starched	I couldn't have been starching
you couldn't have been starching
he couldn't have been starching
we couldn't have been starching
you couldn't have been starching
they couldn't have been starching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I starch?
could you starch?
could he starch?
could we starch?
could you starch?
could they starch? 	could I be starching?
could you be starching?
could he be starching?
could we be starching?
could you be starching?
could they be starching? 	could I have starched?
could you have starched?
could he have starched?
could we have starched?
could you have starched?
could they have starched? 	could I have been starching?
could you have been starching?
could he have been starching?
could we have been starching?
could you have been starching?
could they have been starching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I starch?
couldn't you starch?
couldn't he starch?
couldn't we starch?
couldn't you starch?
couldn't they starch? 	couldn't I be starching?
couldn't you be starching?
couldn't he be starching?
couldn't we be starching?
couldn't you be starching?
couldn't they be starching? 	couldn't I have starched?
couldn't you have starched?
couldn't he have starched?
couldn't we have starched?
couldn't you have starched?
couldn't they have starched? 	couldn't I have been starching?
couldn't you have been starching?
couldn't he have been starching?
couldn't we have been starching?
couldn't you have been starching?
couldn't they have been starching?