could spill
Irregular verb: spill - spilled, spilt- spilled, spilt

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could spill
you could spill
he could spill
we could spill
you could spill
they could spill 	I could be spilling
you could be spilling
he could be spilling
we could be spilling
you could be spilling
they could be spilling	I could have spilled, spilt
you could have spilled, spilt
he could have spilled, spilt
we could have spilled, spilt
you could have spilled, spilt
they could have spilled, spilt	I could have been spilling
you could have been spilling
he could have been spilling
we could have been spilling
you could have been spilling
they could have been spilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not spill
you could not spill
he could not spill
we could not spill
you could not spill
they could not spill 	I could not be spilling
you could not be spilling
he could not be spilling
we could not be spilling
you could not be spilling
they could not be spilling	I could not have spilled, spilt
you could not have spilled, spilt
he could not have spilled, spilt
we could not have spilled, spilt
you could not have spilled, spilt
they could not have spilled, spilt	I could not have been spilling
you could not have been spilling
he could not have been spilling
we could not have been spilling
you could not have been spilling
they could not have been spilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I spill?
could you spill?
could he spill?
could we spill?
could you spill?
could they spill? 	could I be spilling?
could you be spilling?
could he be spilling?
could we be spilling?
could you be spilling?
could they be spilling? 	could I have spilled, spilt?
could you have spilled, spilt?
could he have spilled, spilt?
could we have spilled, spilt?
could you have spilled, spilt?
could they have spilled, spilt? 	could I have been spilling?
could you have been spilling?
could he have been spilling?
could we have been spilling?
could you have been spilling?
could they have been spilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not spill?
could you not spill?
could he not spill?
could we not spill?
could you not spill?
could they not spill? 	could I not be spilling?
could you not be spilling?
could he not be spilling?
could we not be spilling?
could you not be spilling?
could they not be spilling? 	could I not have spilled, spilt?
could you not have spilled, spilt?
could he not have spilled, spilt?
could we not have spilled, spilt?
could you not have spilled, spilt?
could they not have spilled, spilt? 	could I not have been spilling?
could you not have been spilling?
could he not have been spilling?
could we not have been spilling?
could you not have been spilling?
could they not have been spilling?