could iodise
Regular verb: iodise - iodised- iodised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could iodise
you could iodise
he could iodise
we could iodise
you could iodise
they could iodise 	I could be iodising
you could be iodising
he could be iodising
we could be iodising
you could be iodising
they could be iodising	I could have iodised
you could have iodised
he could have iodised
we could have iodised
you could have iodised
they could have iodised	I could have been iodising
you could have been iodising
he could have been iodising
we could have been iodising
you could have been iodising
they could have been iodising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't iodise
you couldn't iodise
he couldn't iodise
we couldn't iodise
you couldn't iodise
they couldn't iodise 	I couldn't be iodising
you couldn't be iodising
he couldn't be iodising
we couldn't be iodising
you couldn't be iodising
they couldn't be iodising	I couldn't have iodised
you couldn't have iodised
he couldn't have iodised
we couldn't have iodised
you couldn't have iodised
they couldn't have iodised	I couldn't have been iodising
you couldn't have been iodising
he couldn't have been iodising
we couldn't have been iodising
you couldn't have been iodising
they couldn't have been iodising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I iodise?
could you iodise?
could he iodise?
could we iodise?
could you iodise?
could they iodise? 	could I be iodising?
could you be iodising?
could he be iodising?
could we be iodising?
could you be iodising?
could they be iodising? 	could I have iodised?
could you have iodised?
could he have iodised?
could we have iodised?
could you have iodised?
could they have iodised? 	could I have been iodising?
could you have been iodising?
could he have been iodising?
could we have been iodising?
could you have been iodising?
could they have been iodising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I iodise?
couldn't you iodise?
couldn't he iodise?
couldn't we iodise?
couldn't you iodise?
couldn't they iodise? 	couldn't I be iodising?
couldn't you be iodising?
couldn't he be iodising?
couldn't we be iodising?
couldn't you be iodising?
couldn't they be iodising? 	couldn't I have iodised?
couldn't you have iodised?
couldn't he have iodised?
couldn't we have iodised?
couldn't you have iodised?
couldn't they have iodised? 	couldn't I have been iodising?
couldn't you have been iodising?
couldn't he have been iodising?
couldn't we have been iodising?
couldn't you have been iodising?
couldn't they have been iodising?