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
she could spill
we could spill
you could spill
they could spill 	I could be spilling
you could be spilling
she 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
she 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
she 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 couldn't spill
you couldn't spill
she couldn't spill
we couldn't spill
you couldn't spill
they couldn't spill 	I couldn't be spilling
you couldn't be spilling
she couldn't be spilling
we couldn't be spilling
you couldn't be spilling
they couldn't be spilling	I couldn't have spilled, spilt
you couldn't have spilled, spilt
she couldn't have spilled, spilt
we couldn't have spilled, spilt
you couldn't have spilled, spilt
they couldn't have spilled, spilt	I couldn't have been spilling
you couldn't have been spilling
she couldn't have been spilling
we couldn't have been spilling
you couldn't have been spilling
they couldn't have been spilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I spill?
could you spill?
could she spill?
could we spill?
could you spill?
could they spill? 	could I be spilling?
could you be spilling?
could she 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 she 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 she 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 	
couldn't I spill?
couldn't you spill?
couldn't she spill?
couldn't we spill?
couldn't you spill?
couldn't they spill? 	couldn't I be spilling?
couldn't you be spilling?
couldn't she be spilling?
couldn't we be spilling?
couldn't you be spilling?
couldn't they be spilling? 	couldn't I have spilled, spilt?
couldn't you have spilled, spilt?
couldn't she have spilled, spilt?
couldn't we have spilled, spilt?
couldn't you have spilled, spilt?
couldn't they have spilled, spilt? 	couldn't I have been spilling?
couldn't you have been spilling?
couldn't she have been spilling?
couldn't we have been spilling?
couldn't you have been spilling?
couldn't they have been spilling?