could syllabicate
Regular verb: syllabicate - syllabicated- syllabicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could syllabicate
you could syllabicate
he could syllabicate
we could syllabicate
you could syllabicate
they could syllabicate 	I could be syllabicating
you could be syllabicating
he could be syllabicating
we could be syllabicating
you could be syllabicating
they could be syllabicating	I could have syllabicated
you could have syllabicated
he could have syllabicated
we could have syllabicated
you could have syllabicated
they could have syllabicated	I could have been syllabicating
you could have been syllabicating
he could have been syllabicating
we could have been syllabicating
you could have been syllabicating
they could have been syllabicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't syllabicate
you couldn't syllabicate
he couldn't syllabicate
we couldn't syllabicate
you couldn't syllabicate
they couldn't syllabicate 	I couldn't be syllabicating
you couldn't be syllabicating
he couldn't be syllabicating
we couldn't be syllabicating
you couldn't be syllabicating
they couldn't be syllabicating	I couldn't have syllabicated
you couldn't have syllabicated
he couldn't have syllabicated
we couldn't have syllabicated
you couldn't have syllabicated
they couldn't have syllabicated	I couldn't have been syllabicating
you couldn't have been syllabicating
he couldn't have been syllabicating
we couldn't have been syllabicating
you couldn't have been syllabicating
they couldn't have been syllabicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I syllabicate?
could you syllabicate?
could he syllabicate?
could we syllabicate?
could you syllabicate?
could they syllabicate? 	could I be syllabicating?
could you be syllabicating?
could he be syllabicating?
could we be syllabicating?
could you be syllabicating?
could they be syllabicating? 	could I have syllabicated?
could you have syllabicated?
could he have syllabicated?
could we have syllabicated?
could you have syllabicated?
could they have syllabicated? 	could I have been syllabicating?
could you have been syllabicating?
could he have been syllabicating?
could we have been syllabicating?
could you have been syllabicating?
could they have been syllabicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I syllabicate?
couldn't you syllabicate?
couldn't he syllabicate?
couldn't we syllabicate?
couldn't you syllabicate?
couldn't they syllabicate? 	couldn't I be syllabicating?
couldn't you be syllabicating?
couldn't he be syllabicating?
couldn't we be syllabicating?
couldn't you be syllabicating?
couldn't they be syllabicating? 	couldn't I have syllabicated?
couldn't you have syllabicated?
couldn't he have syllabicated?
couldn't we have syllabicated?
couldn't you have syllabicated?
couldn't they have syllabicated? 	couldn't I have been syllabicating?
couldn't you have been syllabicating?
couldn't he have been syllabicating?
couldn't we have been syllabicating?
couldn't you have been syllabicating?
couldn't they have been syllabicating?