English verb conjugation
COULD BRUISE

Regular verb: bruise - bruised - bruised

Affirmation

Simple form	V-ing form
I could bruise you could bruise he could bruise we could bruise you could bruise they could bruise	I could be bruising you could be bruising he could be bruising we could be bruising you could be bruising they could be bruising
Perfect	V-ing perfect
I could have bruised you could have bruised he could have bruised we could have bruised you could have bruised they could have bruised	I could have been bruising you could have been bruising he could have been bruising we could have been bruising you could have been bruising they could have been bruising

Negation

Simple form	V-ing form
I couldn't bruise you couldn't bruise he couldn't bruise we couldn't bruise you couldn't bruise they couldn't bruise	I couldn't be bruising you couldn't be bruising he couldn't be bruising we couldn't be bruising you couldn't be bruising they couldn't be bruising
Perfect	V-ing perfect
I couldn't have bruised you couldn't have bruised he couldn't have bruised we couldn't have bruised you couldn't have bruised they couldn't have bruised	I couldn't have been bruising you couldn't have been bruising he couldn't have been bruising we couldn't have been bruising you couldn't have been bruising they couldn't have been bruising

Interrogative form

Simple form	V-ing form
could I bruise? could you bruise? could he bruise? could we bruise? could you bruise? could they bruise?	could I be bruising? could you be bruising? could he be bruising? could we be bruising? could you be bruising? could they be bruising?
Perfect	V-ing perfect
could I have bruised? could you have bruised? could he have bruised? could we have bruised? could you have bruised? could they have bruised?	could I have been bruising? could you have been bruising? could he have been bruising? could we have been bruising? could you have been bruising? could they have been bruising?

Interro-negative form

Simple form	V-ing form
couldn't I bruise? couldn't you bruise? couldn't he bruise? couldn't we bruise? couldn't you bruise? couldn't they bruise?	couldn't I be bruising? couldn't you be bruising? couldn't he be bruising? couldn't we be bruising? couldn't you be bruising? couldn't they be bruising?
Perfect	V-ing perfect
couldn't I have bruised? couldn't you have bruised? couldn't he have bruised? couldn't we have bruised? couldn't you have bruised? couldn't they have bruised?	couldn't I have been bruising? couldn't you have been bruising? couldn't he have been bruising? couldn't we have been bruising? couldn't you have been bruising? couldn't they have been bruising?