could suture
Regular verb: suture - sutured- sutured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could suture
you could suture
he could suture
we could suture
you could suture
they could suture 	I could be suturing
you could be suturing
he could be suturing
we could be suturing
you could be suturing
they could be suturing	I could have sutured
you could have sutured
he could have sutured
we could have sutured
you could have sutured
they could have sutured	I could have been suturing
you could have been suturing
he could have been suturing
we could have been suturing
you could have been suturing
they could have been suturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not suture
you could not suture
he could not suture
we could not suture
you could not suture
they could not suture 	I could not be suturing
you could not be suturing
he could not be suturing
we could not be suturing
you could not be suturing
they could not be suturing	I could not have sutured
you could not have sutured
he could not have sutured
we could not have sutured
you could not have sutured
they could not have sutured	I could not have been suturing
you could not have been suturing
he could not have been suturing
we could not have been suturing
you could not have been suturing
they could not have been suturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I suture?
could you suture?
could he suture?
could we suture?
could you suture?
could they suture? 	could I be suturing?
could you be suturing?
could he be suturing?
could we be suturing?
could you be suturing?
could they be suturing? 	could I have sutured?
could you have sutured?
could he have sutured?
could we have sutured?
could you have sutured?
could they have sutured? 	could I have been suturing?
could you have been suturing?
could he have been suturing?
could we have been suturing?
could you have been suturing?
could they have been suturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not suture?
could you not suture?
could he not suture?
could we not suture?
could you not suture?
could they not suture? 	could I not be suturing?
could you not be suturing?
could he not be suturing?
could we not be suturing?
could you not be suturing?
could they not be suturing? 	could I not have sutured?
could you not have sutured?
could he not have sutured?
could we not have sutured?
could you not have sutured?
could they not have sutured? 	could I not have been suturing?
could you not have been suturing?
could he not have been suturing?
could we not have been suturing?
could you not have been suturing?
could they not have been suturing?