English verb conjugation
COULD COLLAR

Regular verb: collar - collared - collared

Affirmation

Simple form	V-ing form
I could collar you could collar he could collar we could collar you could collar they could collar	I could be collaring you could be collaring he could be collaring we could be collaring you could be collaring they could be collaring
Perfect	V-ing perfect
I could have collared you could have collared he could have collared we could have collared you could have collared they could have collared	I could have been collaring you could have been collaring he could have been collaring we could have been collaring you could have been collaring they could have been collaring

Negation

Simple form	V-ing form
I could not collar you could not collar he could not collar we could not collar you could not collar they could not collar	I could not be collaring you could not be collaring he could not be collaring we could not be collaring you could not be collaring they could not be collaring
Perfect	V-ing perfect
I could not have collared you could not have collared he could not have collared we could not have collared you could not have collared they could not have collared	I could not have been collaring you could not have been collaring he could not have been collaring we could not have been collaring you could not have been collaring they could not have been collaring

Interrogative form

Simple form	V-ing form
could I collar? could you collar? could he collar? could we collar? could you collar? could they collar?	could I be collaring? could you be collaring? could he be collaring? could we be collaring? could you be collaring? could they be collaring?
Perfect	V-ing perfect
could I have collared? could you have collared? could he have collared? could we have collared? could you have collared? could they have collared?	could I have been collaring? could you have been collaring? could he have been collaring? could we have been collaring? could you have been collaring? could they have been collaring?

Interro-negative form

Simple form	V-ing form
could I not collar? could you not collar? could he not collar? could we not collar? could you not collar? could they not collar?	could I not be collaring? could you not be collaring? could he not be collaring? could we not be collaring? could you not be collaring? could they not be collaring?
Perfect	V-ing perfect
could I not have collared? could you not have collared? could he not have collared? could we not have collared? could you not have collared? could they not have collared?	could I not have been collaring? could you not have been collaring? could he not have been collaring? could we not have been collaring? could you not have been collaring? could they not have been collaring?