English verb conjugation
COULD SINGULARISE

Regular verb: singularise - singularised - singularised

Affirmation

Simple form	V-ing form
I could singularise you could singularise he could singularise we could singularise you could singularise they could singularise	I could be singularising you could be singularising he could be singularising we could be singularising you could be singularising they could be singularising
Perfect	V-ing perfect
I could have singularised you could have singularised he could have singularised we could have singularised you could have singularised they could have singularised	I could have been singularising you could have been singularising he could have been singularising we could have been singularising you could have been singularising they could have been singularising

Negation

Simple form	V-ing form
I couldn't singularise you couldn't singularise he couldn't singularise we couldn't singularise you couldn't singularise they couldn't singularise	I couldn't be singularising you couldn't be singularising he couldn't be singularising we couldn't be singularising you couldn't be singularising they couldn't be singularising
Perfect	V-ing perfect
I couldn't have singularised you couldn't have singularised he couldn't have singularised we couldn't have singularised you couldn't have singularised they couldn't have singularised	I couldn't have been singularising you couldn't have been singularising he couldn't have been singularising we couldn't have been singularising you couldn't have been singularising they couldn't have been singularising

Interrogative form

Simple form	V-ing form
could I singularise? could you singularise? could he singularise? could we singularise? could you singularise? could they singularise?	could I be singularising? could you be singularising? could he be singularising? could we be singularising? could you be singularising? could they be singularising?
Perfect	V-ing perfect
could I have singularised? could you have singularised? could he have singularised? could we have singularised? could you have singularised? could they have singularised?	could I have been singularising? could you have been singularising? could he have been singularising? could we have been singularising? could you have been singularising? could they have been singularising?

Interro-negative form

Simple form	V-ing form
couldn't I singularise? couldn't you singularise? couldn't he singularise? couldn't we singularise? couldn't you singularise? couldn't they singularise?	couldn't I be singularising? couldn't you be singularising? couldn't he be singularising? couldn't we be singularising? couldn't you be singularising? couldn't they be singularising?
Perfect	V-ing perfect
couldn't I have singularised? couldn't you have singularised? couldn't he have singularised? couldn't we have singularised? couldn't you have singularised? couldn't they have singularised?	couldn't I have been singularising? couldn't you have been singularising? couldn't he have been singularising? couldn't we have been singularising? couldn't you have been singularising? couldn't they have been singularising?