English verb conjugation
COULD HARMONISE

Regular verb: harmonise - harmonised - harmonised

Affirmation

Simple form	V-ing form
I could harmonise you could harmonise he could harmonise we could harmonise you could harmonise they could harmonise	I could be harmonising you could be harmonising he could be harmonising we could be harmonising you could be harmonising they could be harmonising
Perfect	V-ing perfect
I could have harmonised you could have harmonised he could have harmonised we could have harmonised you could have harmonised they could have harmonised	I could have been harmonising you could have been harmonising he could have been harmonising we could have been harmonising you could have been harmonising they could have been harmonising

Negation

Simple form	V-ing form
I couldn't harmonise you couldn't harmonise he couldn't harmonise we couldn't harmonise you couldn't harmonise they couldn't harmonise	I couldn't be harmonising you couldn't be harmonising he couldn't be harmonising we couldn't be harmonising you couldn't be harmonising they couldn't be harmonising
Perfect	V-ing perfect
I couldn't have harmonised you couldn't have harmonised he couldn't have harmonised we couldn't have harmonised you couldn't have harmonised they couldn't have harmonised	I couldn't have been harmonising you couldn't have been harmonising he couldn't have been harmonising we couldn't have been harmonising you couldn't have been harmonising they couldn't have been harmonising

Interrogative form

Simple form	V-ing form
could I harmonise? could you harmonise? could he harmonise? could we harmonise? could you harmonise? could they harmonise?	could I be harmonising? could you be harmonising? could he be harmonising? could we be harmonising? could you be harmonising? could they be harmonising?
Perfect	V-ing perfect
could I have harmonised? could you have harmonised? could he have harmonised? could we have harmonised? could you have harmonised? could they have harmonised?	could I have been harmonising? could you have been harmonising? could he have been harmonising? could we have been harmonising? could you have been harmonising? could they have been harmonising?

Interro-negative form

Simple form	V-ing form
couldn't I harmonise? couldn't you harmonise? couldn't he harmonise? couldn't we harmonise? couldn't you harmonise? couldn't they harmonise?	couldn't I be harmonising? couldn't you be harmonising? couldn't he be harmonising? couldn't we be harmonising? couldn't you be harmonising? couldn't they be harmonising?
Perfect	V-ing perfect
couldn't I have harmonised? couldn't you have harmonised? couldn't he have harmonised? couldn't we have harmonised? couldn't you have harmonised? couldn't they have harmonised?	couldn't I have been harmonising? couldn't you have been harmonising? couldn't he have been harmonising? couldn't we have been harmonising? couldn't you have been harmonising? couldn't they have been harmonising?