could sandblast
Regular verb: sandblast - sandblasted- sandblasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sandblast
you could sandblast
he could sandblast
we could sandblast
you could sandblast
they could sandblast 	I could be sandblasting
you could be sandblasting
he could be sandblasting
we could be sandblasting
you could be sandblasting
they could be sandblasting	I could have sandblasted
you could have sandblasted
he could have sandblasted
we could have sandblasted
you could have sandblasted
they could have sandblasted	I could have been sandblasting
you could have been sandblasting
he could have been sandblasting
we could have been sandblasting
you could have been sandblasting
they could have been sandblasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sandblast
you couldn't sandblast
he couldn't sandblast
we couldn't sandblast
you couldn't sandblast
they couldn't sandblast 	I couldn't be sandblasting
you couldn't be sandblasting
he couldn't be sandblasting
we couldn't be sandblasting
you couldn't be sandblasting
they couldn't be sandblasting	I couldn't have sandblasted
you couldn't have sandblasted
he couldn't have sandblasted
we couldn't have sandblasted
you couldn't have sandblasted
they couldn't have sandblasted	I couldn't have been sandblasting
you couldn't have been sandblasting
he couldn't have been sandblasting
we couldn't have been sandblasting
you couldn't have been sandblasting
they couldn't have been sandblasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sandblast?
could you sandblast?
could he sandblast?
could we sandblast?
could you sandblast?
could they sandblast? 	could I be sandblasting?
could you be sandblasting?
could he be sandblasting?
could we be sandblasting?
could you be sandblasting?
could they be sandblasting? 	could I have sandblasted?
could you have sandblasted?
could he have sandblasted?
could we have sandblasted?
could you have sandblasted?
could they have sandblasted? 	could I have been sandblasting?
could you have been sandblasting?
could he have been sandblasting?
could we have been sandblasting?
could you have been sandblasting?
could they have been sandblasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sandblast?
couldn't you sandblast?
couldn't he sandblast?
couldn't we sandblast?
couldn't you sandblast?
couldn't they sandblast? 	couldn't I be sandblasting?
couldn't you be sandblasting?
couldn't he be sandblasting?
couldn't we be sandblasting?
couldn't you be sandblasting?
couldn't they be sandblasting? 	couldn't I have sandblasted?
couldn't you have sandblasted?
couldn't he have sandblasted?
couldn't we have sandblasted?
couldn't you have sandblasted?
couldn't they have sandblasted? 	couldn't I have been sandblasting?
couldn't you have been sandblasting?
couldn't he have been sandblasting?
couldn't we have been sandblasting?
couldn't you have been sandblasting?
couldn't they have been sandblasting?