English verb conjugation
COULD CROSS-FERTILISE

Regular verb: cross-fertilise - cross-fertilised - cross-fertilised

Affirmation

Simple form	V-ing form
I could cross-fertilise you could cross-fertilise he could cross-fertilise we could cross-fertilise you could cross-fertilise they could cross-fertilise	I could be cross-fertilising you could be cross-fertilising he could be cross-fertilising we could be cross-fertilising you could be cross-fertilising they could be cross-fertilising
Perfect	V-ing perfect
I could have cross-fertilised you could have cross-fertilised he could have cross-fertilised we could have cross-fertilised you could have cross-fertilised they could have cross-fertilised	I could have been cross-fertilising you could have been cross-fertilising he could have been cross-fertilising we could have been cross-fertilising you could have been cross-fertilising they could have been cross-fertilising

Negation

Simple form	V-ing form
I couldn't cross-fertilise you couldn't cross-fertilise he couldn't cross-fertilise we couldn't cross-fertilise you couldn't cross-fertilise they couldn't cross-fertilise	I couldn't be cross-fertilising you couldn't be cross-fertilising he couldn't be cross-fertilising we couldn't be cross-fertilising you couldn't be cross-fertilising they couldn't be cross-fertilising
Perfect	V-ing perfect
I couldn't have cross-fertilised you couldn't have cross-fertilised he couldn't have cross-fertilised we couldn't have cross-fertilised you couldn't have cross-fertilised they couldn't have cross-fertilised	I couldn't have been cross-fertilising you couldn't have been cross-fertilising he couldn't have been cross-fertilising we couldn't have been cross-fertilising you couldn't have been cross-fertilising they couldn't have been cross-fertilising

Interrogative form

Simple form	V-ing form
could I cross-fertilise? could you cross-fertilise? could he cross-fertilise? could we cross-fertilise? could you cross-fertilise? could they cross-fertilise?	could I be cross-fertilising? could you be cross-fertilising? could he be cross-fertilising? could we be cross-fertilising? could you be cross-fertilising? could they be cross-fertilising?
Perfect	V-ing perfect
could I have cross-fertilised? could you have cross-fertilised? could he have cross-fertilised? could we have cross-fertilised? could you have cross-fertilised? could they have cross-fertilised?	could I have been cross-fertilising? could you have been cross-fertilising? could he have been cross-fertilising? could we have been cross-fertilising? could you have been cross-fertilising? could they have been cross-fertilising?

Interro-negative form

Simple form	V-ing form
couldn't I cross-fertilise? couldn't you cross-fertilise? couldn't he cross-fertilise? couldn't we cross-fertilise? couldn't you cross-fertilise? couldn't they cross-fertilise?	couldn't I be cross-fertilising? couldn't you be cross-fertilising? couldn't he be cross-fertilising? couldn't we be cross-fertilising? couldn't you be cross-fertilising? couldn't they be cross-fertilising?
Perfect	V-ing perfect
couldn't I have cross-fertilised? couldn't you have cross-fertilised? couldn't he have cross-fertilised? couldn't we have cross-fertilised? couldn't you have cross-fertilised? couldn't they have cross-fertilised?	couldn't I have been cross-fertilising? couldn't you have been cross-fertilising? couldn't he have been cross-fertilising? couldn't we have been cross-fertilising? couldn't you have been cross-fertilising? couldn't they have been cross-fertilising?