English verb conjugation
COULD REALISE

Regular verb: realise - realised - realised

Affirmation

Simple form	V-ing form
I could realise you could realise he could realise we could realise you could realise they could realise	I could be realising you could be realising he could be realising we could be realising you could be realising they could be realising
Perfect	V-ing perfect
I could have realised you could have realised he could have realised we could have realised you could have realised they could have realised	I could have been realising you could have been realising he could have been realising we could have been realising you could have been realising they could have been realising

Negation

Simple form	V-ing form
I couldn't realise you couldn't realise he couldn't realise we couldn't realise you couldn't realise they couldn't realise	I couldn't be realising you couldn't be realising he couldn't be realising we couldn't be realising you couldn't be realising they couldn't be realising
Perfect	V-ing perfect
I couldn't have realised you couldn't have realised he couldn't have realised we couldn't have realised you couldn't have realised they couldn't have realised	I couldn't have been realising you couldn't have been realising he couldn't have been realising we couldn't have been realising you couldn't have been realising they couldn't have been realising

Interrogative form

Simple form	V-ing form
could I realise? could you realise? could he realise? could we realise? could you realise? could they realise?	could I be realising? could you be realising? could he be realising? could we be realising? could you be realising? could they be realising?
Perfect	V-ing perfect
could I have realised? could you have realised? could he have realised? could we have realised? could you have realised? could they have realised?	could I have been realising? could you have been realising? could he have been realising? could we have been realising? could you have been realising? could they have been realising?

Interro-negative form

Simple form	V-ing form
couldn't I realise? couldn't you realise? couldn't he realise? couldn't we realise? couldn't you realise? couldn't they realise?	couldn't I be realising? couldn't you be realising? couldn't he be realising? couldn't we be realising? couldn't you be realising? couldn't they be realising?
Perfect	V-ing perfect
couldn't I have realised? couldn't you have realised? couldn't he have realised? couldn't we have realised? couldn't you have realised? couldn't they have realised?	couldn't I have been realising? couldn't you have been realising? couldn't he have been realising? couldn't we have been realising? couldn't you have been realising? couldn't they have been realising?