Irregular verb: spill - spilled, spilt - spilled, spilt
Affirmation
Simple form
I could spill you could spill he could spill we could spill you could spill they could spill
V-ing form
I could be spilling you could be spilling he could be spilling we could be spilling you could be spilling they could be spilling
Perfect
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
V-ing perfect
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
I couldn't spill you couldn't spill he couldn't spill we couldn't spill you couldn't spill they couldn't spill
V-ing form
I couldn't be spilling you couldn't be spilling he couldn't be spilling we couldn't be spilling you couldn't be spilling they couldn't be spilling
Perfect
I couldn't have spilled, spilt you couldn't have spilled, spilt he couldn't have spilled, spilt we couldn't have spilled, spilt you couldn't have spilled, spilt they couldn't have spilled, spilt
V-ing perfect
I couldn't have been spilling you couldn't have been spilling he 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
could I spill? could you spill? could he spill? could we spill? could you spill? could they spill?
V-ing form
could I be spilling? could you be spilling? could he be spilling? could we be spilling? could you be spilling? could they be spilling?
Perfect
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?
V-ing perfect
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
couldn't I spill? couldn't you spill? couldn't he spill? couldn't we spill? couldn't you spill? couldn't they spill?
V-ing form
couldn't I be spilling? couldn't you be spilling? couldn't he be spilling? couldn't we be spilling? couldn't you be spilling? couldn't they be spilling?
Perfect
couldn't I have spilled, spilt? couldn't you have spilled, spilt? couldn't he have spilled, spilt? couldn't we have spilled, spilt? couldn't you have spilled, spilt? couldn't they have spilled, spilt?
V-ing perfect
couldn't I have been spilling? couldn't you have been spilling? couldn't he have been spilling? couldn't we have been spilling? couldn't you have been spilling? couldn't they have been spilling?