could affix
Regular verb: affix - affixed- affixed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could affix
you could affix
he could affix
we could affix
you could affix
they could affix 	I could be affixing
you could be affixing
he could be affixing
we could be affixing
you could be affixing
they could be affixing	I could have affixed
you could have affixed
he could have affixed
we could have affixed
you could have affixed
they could have affixed	I could have been affixing
you could have been affixing
he could have been affixing
we could have been affixing
you could have been affixing
they could have been affixing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't affix
you couldn't affix
he couldn't affix
we couldn't affix
you couldn't affix
they couldn't affix 	I couldn't be affixing
you couldn't be affixing
he couldn't be affixing
we couldn't be affixing
you couldn't be affixing
they couldn't be affixing	I couldn't have affixed
you couldn't have affixed
he couldn't have affixed
we couldn't have affixed
you couldn't have affixed
they couldn't have affixed	I couldn't have been affixing
you couldn't have been affixing
he couldn't have been affixing
we couldn't have been affixing
you couldn't have been affixing
they couldn't have been affixing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I affix?
could you affix?
could he affix?
could we affix?
could you affix?
could they affix? 	could I be affixing?
could you be affixing?
could he be affixing?
could we be affixing?
could you be affixing?
could they be affixing? 	could I have affixed?
could you have affixed?
could he have affixed?
could we have affixed?
could you have affixed?
could they have affixed? 	could I have been affixing?
could you have been affixing?
could he have been affixing?
could we have been affixing?
could you have been affixing?
could they have been affixing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I affix?
couldn't you affix?
couldn't he affix?
couldn't we affix?
couldn't you affix?
couldn't they affix? 	couldn't I be affixing?
couldn't you be affixing?
couldn't he be affixing?
couldn't we be affixing?
couldn't you be affixing?
couldn't they be affixing? 	couldn't I have affixed?
couldn't you have affixed?
couldn't he have affixed?
couldn't we have affixed?
couldn't you have affixed?
couldn't they have affixed? 	couldn't I have been affixing?
couldn't you have been affixing?
couldn't he have been affixing?
couldn't we have been affixing?
couldn't you have been affixing?
couldn't they have been affixing?