could decussate
Regular verb: decussate - decussated- decussated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could decussate
you could decussate
he could decussate
we could decussate
you could decussate
they could decussate 	I could be decussating
you could be decussating
he could be decussating
we could be decussating
you could be decussating
they could be decussating	I could have decussated
you could have decussated
he could have decussated
we could have decussated
you could have decussated
they could have decussated	I could have been decussating
you could have been decussating
he could have been decussating
we could have been decussating
you could have been decussating
they could have been decussating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't decussate
you couldn't decussate
he couldn't decussate
we couldn't decussate
you couldn't decussate
they couldn't decussate 	I couldn't be decussating
you couldn't be decussating
he couldn't be decussating
we couldn't be decussating
you couldn't be decussating
they couldn't be decussating	I couldn't have decussated
you couldn't have decussated
he couldn't have decussated
we couldn't have decussated
you couldn't have decussated
they couldn't have decussated	I couldn't have been decussating
you couldn't have been decussating
he couldn't have been decussating
we couldn't have been decussating
you couldn't have been decussating
they couldn't have been decussating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I decussate?
could you decussate?
could he decussate?
could we decussate?
could you decussate?
could they decussate? 	could I be decussating?
could you be decussating?
could he be decussating?
could we be decussating?
could you be decussating?
could they be decussating? 	could I have decussated?
could you have decussated?
could he have decussated?
could we have decussated?
could you have decussated?
could they have decussated? 	could I have been decussating?
could you have been decussating?
could he have been decussating?
could we have been decussating?
could you have been decussating?
could they have been decussating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I decussate?
couldn't you decussate?
couldn't he decussate?
couldn't we decussate?
couldn't you decussate?
couldn't they decussate? 	couldn't I be decussating?
couldn't you be decussating?
couldn't he be decussating?
couldn't we be decussating?
couldn't you be decussating?
couldn't they be decussating? 	couldn't I have decussated?
couldn't you have decussated?
couldn't he have decussated?
couldn't we have decussated?
couldn't you have decussated?
couldn't they have decussated? 	couldn't I have been decussating?
couldn't you have been decussating?
couldn't he have been decussating?
couldn't we have been decussating?
couldn't you have been decussating?
couldn't they have been decussating?