could diaper
Regular verb: diaper - diapered- diapered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could diaper
you could diaper
she could diaper
we could diaper
you could diaper
they could diaper 	I could be diapering
you could be diapering
she could be diapering
we could be diapering
you could be diapering
they could be diapering	I could have diapered
you could have diapered
she could have diapered
we could have diapered
you could have diapered
they could have diapered	I could have been diapering
you could have been diapering
she could have been diapering
we could have been diapering
you could have been diapering
they could have been diapering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't diaper
you couldn't diaper
she couldn't diaper
we couldn't diaper
you couldn't diaper
they couldn't diaper 	I couldn't be diapering
you couldn't be diapering
she couldn't be diapering
we couldn't be diapering
you couldn't be diapering
they couldn't be diapering	I couldn't have diapered
you couldn't have diapered
she couldn't have diapered
we couldn't have diapered
you couldn't have diapered
they couldn't have diapered	I couldn't have been diapering
you couldn't have been diapering
she couldn't have been diapering
we couldn't have been diapering
you couldn't have been diapering
they couldn't have been diapering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I diaper?
could you diaper?
could she diaper?
could we diaper?
could you diaper?
could they diaper? 	could I be diapering?
could you be diapering?
could she be diapering?
could we be diapering?
could you be diapering?
could they be diapering? 	could I have diapered?
could you have diapered?
could she have diapered?
could we have diapered?
could you have diapered?
could they have diapered? 	could I have been diapering?
could you have been diapering?
could she have been diapering?
could we have been diapering?
could you have been diapering?
could they have been diapering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I diaper?
couldn't you diaper?
couldn't she diaper?
couldn't we diaper?
couldn't you diaper?
couldn't they diaper? 	couldn't I be diapering?
couldn't you be diapering?
couldn't she be diapering?
couldn't we be diapering?
couldn't you be diapering?
couldn't they be diapering? 	couldn't I have diapered?
couldn't you have diapered?
couldn't she have diapered?
couldn't we have diapered?
couldn't you have diapered?
couldn't they have diapered? 	couldn't I have been diapering?
couldn't you have been diapering?
couldn't she have been diapering?
couldn't we have been diapering?
couldn't you have been diapering?
couldn't they have been diapering?