could suspend
Regular verb: suspend - suspended- suspended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could suspend
you could suspend
he could suspend
we could suspend
you could suspend
they could suspend 	I could be suspending
you could be suspending
he could be suspending
we could be suspending
you could be suspending
they could be suspending	I could have suspended
you could have suspended
he could have suspended
we could have suspended
you could have suspended
they could have suspended	I could have been suspending
you could have been suspending
he could have been suspending
we could have been suspending
you could have been suspending
they could have been suspending	

Negation 	
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I couldn't suspend
you couldn't suspend
he couldn't suspend
we couldn't suspend
you couldn't suspend
they couldn't suspend 	I couldn't be suspending
you couldn't be suspending
he couldn't be suspending
we couldn't be suspending
you couldn't be suspending
they couldn't be suspending	I couldn't have suspended
you couldn't have suspended
he couldn't have suspended
we couldn't have suspended
you couldn't have suspended
they couldn't have suspended	I couldn't have been suspending
you couldn't have been suspending
he couldn't have been suspending
we couldn't have been suspending
you couldn't have been suspending
they couldn't have been suspending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I suspend?
could you suspend?
could he suspend?
could we suspend?
could you suspend?
could they suspend? 	could I be suspending?
could you be suspending?
could he be suspending?
could we be suspending?
could you be suspending?
could they be suspending? 	could I have suspended?
could you have suspended?
could he have suspended?
could we have suspended?
could you have suspended?
could they have suspended? 	could I have been suspending?
could you have been suspending?
could he have been suspending?
could we have been suspending?
could you have been suspending?
could they have been suspending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I suspend?
couldn't you suspend?
couldn't he suspend?
couldn't we suspend?
couldn't you suspend?
couldn't they suspend? 	couldn't I be suspending?
couldn't you be suspending?
couldn't he be suspending?
couldn't we be suspending?
couldn't you be suspending?
couldn't they be suspending? 	couldn't I have suspended?
couldn't you have suspended?
couldn't he have suspended?
couldn't we have suspended?
couldn't you have suspended?
couldn't they have suspended? 	couldn't I have been suspending?
couldn't you have been suspending?
couldn't he have been suspending?
couldn't we have been suspending?
couldn't you have been suspending?
couldn't they have been suspending?