could stiletto
Regular verb: stiletto - stilettoed- stilettoed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could stiletto
you could stiletto
he could stiletto
we could stiletto
you could stiletto
they could stiletto 	I could be stilettoing
you could be stilettoing
he could be stilettoing
we could be stilettoing
you could be stilettoing
they could be stilettoing	I could have stilettoed
you could have stilettoed
he could have stilettoed
we could have stilettoed
you could have stilettoed
they could have stilettoed	I could have been stilettoing
you could have been stilettoing
he could have been stilettoing
we could have been stilettoing
you could have been stilettoing
they could have been stilettoing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't stiletto
you couldn't stiletto
he couldn't stiletto
we couldn't stiletto
you couldn't stiletto
they couldn't stiletto 	I couldn't be stilettoing
you couldn't be stilettoing
he couldn't be stilettoing
we couldn't be stilettoing
you couldn't be stilettoing
they couldn't be stilettoing	I couldn't have stilettoed
you couldn't have stilettoed
he couldn't have stilettoed
we couldn't have stilettoed
you couldn't have stilettoed
they couldn't have stilettoed	I couldn't have been stilettoing
you couldn't have been stilettoing
he couldn't have been stilettoing
we couldn't have been stilettoing
you couldn't have been stilettoing
they couldn't have been stilettoing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I stiletto?
could you stiletto?
could he stiletto?
could we stiletto?
could you stiletto?
could they stiletto? 	could I be stilettoing?
could you be stilettoing?
could he be stilettoing?
could we be stilettoing?
could you be stilettoing?
could they be stilettoing? 	could I have stilettoed?
could you have stilettoed?
could he have stilettoed?
could we have stilettoed?
could you have stilettoed?
could they have stilettoed? 	could I have been stilettoing?
could you have been stilettoing?
could he have been stilettoing?
could we have been stilettoing?
could you have been stilettoing?
could they have been stilettoing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I stiletto?
couldn't you stiletto?
couldn't he stiletto?
couldn't we stiletto?
couldn't you stiletto?
couldn't they stiletto? 	couldn't I be stilettoing?
couldn't you be stilettoing?
couldn't he be stilettoing?
couldn't we be stilettoing?
couldn't you be stilettoing?
couldn't they be stilettoing? 	couldn't I have stilettoed?
couldn't you have stilettoed?
couldn't he have stilettoed?
couldn't we have stilettoed?
couldn't you have stilettoed?
couldn't they have stilettoed? 	couldn't I have been stilettoing?
couldn't you have been stilettoing?
couldn't he have been stilettoing?
couldn't we have been stilettoing?
couldn't you have been stilettoing?
couldn't they have been stilettoing?