could partition
Regular verb: partition - partitioned- partitioned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could partition
you could partition
she could partition
we could partition
you could partition
they could partition 	I could be partitioning
you could be partitioning
she could be partitioning
we could be partitioning
you could be partitioning
they could be partitioning	I could have partitioned
you could have partitioned
she could have partitioned
we could have partitioned
you could have partitioned
they could have partitioned	I could have been partitioning
you could have been partitioning
she could have been partitioning
we could have been partitioning
you could have been partitioning
they could have been partitioning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't partition
you couldn't partition
she couldn't partition
we couldn't partition
you couldn't partition
they couldn't partition 	I couldn't be partitioning
you couldn't be partitioning
she couldn't be partitioning
we couldn't be partitioning
you couldn't be partitioning
they couldn't be partitioning	I couldn't have partitioned
you couldn't have partitioned
she couldn't have partitioned
we couldn't have partitioned
you couldn't have partitioned
they couldn't have partitioned	I couldn't have been partitioning
you couldn't have been partitioning
she couldn't have been partitioning
we couldn't have been partitioning
you couldn't have been partitioning
they couldn't have been partitioning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I partition?
could you partition?
could she partition?
could we partition?
could you partition?
could they partition? 	could I be partitioning?
could you be partitioning?
could she be partitioning?
could we be partitioning?
could you be partitioning?
could they be partitioning? 	could I have partitioned?
could you have partitioned?
could she have partitioned?
could we have partitioned?
could you have partitioned?
could they have partitioned? 	could I have been partitioning?
could you have been partitioning?
could she have been partitioning?
could we have been partitioning?
could you have been partitioning?
could they have been partitioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I partition?
couldn't you partition?
couldn't she partition?
couldn't we partition?
couldn't you partition?
couldn't they partition? 	couldn't I be partitioning?
couldn't you be partitioning?
couldn't she be partitioning?
couldn't we be partitioning?
couldn't you be partitioning?
couldn't they be partitioning? 	couldn't I have partitioned?
couldn't you have partitioned?
couldn't she have partitioned?
couldn't we have partitioned?
couldn't you have partitioned?
couldn't they have partitioned? 	couldn't I have been partitioning?
couldn't you have been partitioning?
couldn't she have been partitioning?
couldn't we have been partitioning?
couldn't you have been partitioning?
couldn't they have been partitioning?