could dizen
Regular verb: dizen - dizened- dizened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dizen
you could dizen
he could dizen
we could dizen
you could dizen
they could dizen 	I could be dizening
you could be dizening
he could be dizening
we could be dizening
you could be dizening
they could be dizening	I could have dizened
you could have dizened
he could have dizened
we could have dizened
you could have dizened
they could have dizened	I could have been dizening
you could have been dizening
he could have been dizening
we could have been dizening
you could have been dizening
they could have been dizening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't dizen
you couldn't dizen
he couldn't dizen
we couldn't dizen
you couldn't dizen
they couldn't dizen 	I couldn't be dizening
you couldn't be dizening
he couldn't be dizening
we couldn't be dizening
you couldn't be dizening
they couldn't be dizening	I couldn't have dizened
you couldn't have dizened
he couldn't have dizened
we couldn't have dizened
you couldn't have dizened
they couldn't have dizened	I couldn't have been dizening
you couldn't have been dizening
he couldn't have been dizening
we couldn't have been dizening
you couldn't have been dizening
they couldn't have been dizening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dizen?
could you dizen?
could he dizen?
could we dizen?
could you dizen?
could they dizen? 	could I be dizening?
could you be dizening?
could he be dizening?
could we be dizening?
could you be dizening?
could they be dizening? 	could I have dizened?
could you have dizened?
could he have dizened?
could we have dizened?
could you have dizened?
could they have dizened? 	could I have been dizening?
could you have been dizening?
could he have been dizening?
could we have been dizening?
could you have been dizening?
could they have been dizening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I dizen?
couldn't you dizen?
couldn't he dizen?
couldn't we dizen?
couldn't you dizen?
couldn't they dizen? 	couldn't I be dizening?
couldn't you be dizening?
couldn't he be dizening?
couldn't we be dizening?
couldn't you be dizening?
couldn't they be dizening? 	couldn't I have dizened?
couldn't you have dizened?
couldn't he have dizened?
couldn't we have dizened?
couldn't you have dizened?
couldn't they have dizened? 	couldn't I have been dizening?
couldn't you have been dizening?
couldn't he have been dizening?
couldn't we have been dizening?
couldn't you have been dizening?
couldn't they have been dizening?