English verb conjugation
COULD PILLAR

Regular verb: pillar - pillared - pillared

Affirmation

Simple form	V-ing form
I could pillar you could pillar he could pillar we could pillar you could pillar they could pillar	I could be pillaring you could be pillaring he could be pillaring we could be pillaring you could be pillaring they could be pillaring
Perfect	V-ing perfect
I could have pillared you could have pillared he could have pillared we could have pillared you could have pillared they could have pillared	I could have been pillaring you could have been pillaring he could have been pillaring we could have been pillaring you could have been pillaring they could have been pillaring

Negation

Simple form	V-ing form
I couldn't pillar you couldn't pillar he couldn't pillar we couldn't pillar you couldn't pillar they couldn't pillar	I couldn't be pillaring you couldn't be pillaring he couldn't be pillaring we couldn't be pillaring you couldn't be pillaring they couldn't be pillaring
Perfect	V-ing perfect
I couldn't have pillared you couldn't have pillared he couldn't have pillared we couldn't have pillared you couldn't have pillared they couldn't have pillared	I couldn't have been pillaring you couldn't have been pillaring he couldn't have been pillaring we couldn't have been pillaring you couldn't have been pillaring they couldn't have been pillaring

Interrogative form

Simple form	V-ing form
could I pillar? could you pillar? could he pillar? could we pillar? could you pillar? could they pillar?	could I be pillaring? could you be pillaring? could he be pillaring? could we be pillaring? could you be pillaring? could they be pillaring?
Perfect	V-ing perfect
could I have pillared? could you have pillared? could he have pillared? could we have pillared? could you have pillared? could they have pillared?	could I have been pillaring? could you have been pillaring? could he have been pillaring? could we have been pillaring? could you have been pillaring? could they have been pillaring?

Interro-negative form

Simple form	V-ing form
couldn't I pillar? couldn't you pillar? couldn't he pillar? couldn't we pillar? couldn't you pillar? couldn't they pillar?	couldn't I be pillaring? couldn't you be pillaring? couldn't he be pillaring? couldn't we be pillaring? couldn't you be pillaring? couldn't they be pillaring?
Perfect	V-ing perfect
couldn't I have pillared? couldn't you have pillared? couldn't he have pillared? couldn't we have pillared? couldn't you have pillared? couldn't they have pillared?	couldn't I have been pillaring? couldn't you have been pillaring? couldn't he have been pillaring? couldn't we have been pillaring? couldn't you have been pillaring? couldn't they have been pillaring?