English verb conjugation
COULD DEICE

Regular verb: deice - deiced - deiced

Affirmation

Simple form	V-ing form
I could deice you could deice he could deice we could deice you could deice they could deice	I could be deicing you could be deicing he could be deicing we could be deicing you could be deicing they could be deicing
Perfect	V-ing perfect
I could have deiced you could have deiced he could have deiced we could have deiced you could have deiced they could have deiced	I could have been deicing you could have been deicing he could have been deicing we could have been deicing you could have been deicing they could have been deicing

Negation

Simple form	V-ing form
I couldn't deice you couldn't deice he couldn't deice we couldn't deice you couldn't deice they couldn't deice	I couldn't be deicing you couldn't be deicing he couldn't be deicing we couldn't be deicing you couldn't be deicing they couldn't be deicing
Perfect	V-ing perfect
I couldn't have deiced you couldn't have deiced he couldn't have deiced we couldn't have deiced you couldn't have deiced they couldn't have deiced	I couldn't have been deicing you couldn't have been deicing he couldn't have been deicing we couldn't have been deicing you couldn't have been deicing they couldn't have been deicing

Interrogative form

Simple form	V-ing form
could I deice? could you deice? could he deice? could we deice? could you deice? could they deice?	could I be deicing? could you be deicing? could he be deicing? could we be deicing? could you be deicing? could they be deicing?
Perfect	V-ing perfect
could I have deiced? could you have deiced? could he have deiced? could we have deiced? could you have deiced? could they have deiced?	could I have been deicing? could you have been deicing? could he have been deicing? could we have been deicing? could you have been deicing? could they have been deicing?

Interro-negative form

Simple form	V-ing form
couldn't I deice? couldn't you deice? couldn't he deice? couldn't we deice? couldn't you deice? couldn't they deice?	couldn't I be deicing? couldn't you be deicing? couldn't he be deicing? couldn't we be deicing? couldn't you be deicing? couldn't they be deicing?
Perfect	V-ing perfect
couldn't I have deiced? couldn't you have deiced? couldn't he have deiced? couldn't we have deiced? couldn't you have deiced? couldn't they have deiced?	couldn't I have been deicing? couldn't you have been deicing? couldn't he have been deicing? couldn't we have been deicing? couldn't you have been deicing? couldn't they have been deicing?