English verb conjugation
COULD KEELHAUL

Regular verb: keelhaul - keelhauled - keelhauled

Affirmation

Simple form	V-ing form
I could keelhaul you could keelhaul he could keelhaul we could keelhaul you could keelhaul they could keelhaul	I could be keelhauling you could be keelhauling he could be keelhauling we could be keelhauling you could be keelhauling they could be keelhauling
Perfect	V-ing perfect
I could have keelhauled you could have keelhauled he could have keelhauled we could have keelhauled you could have keelhauled they could have keelhauled	I could have been keelhauling you could have been keelhauling he could have been keelhauling we could have been keelhauling you could have been keelhauling they could have been keelhauling

Negation

Simple form	V-ing form
I couldn't keelhaul you couldn't keelhaul he couldn't keelhaul we couldn't keelhaul you couldn't keelhaul they couldn't keelhaul	I couldn't be keelhauling you couldn't be keelhauling he couldn't be keelhauling we couldn't be keelhauling you couldn't be keelhauling they couldn't be keelhauling
Perfect	V-ing perfect
I couldn't have keelhauled you couldn't have keelhauled he couldn't have keelhauled we couldn't have keelhauled you couldn't have keelhauled they couldn't have keelhauled	I couldn't have been keelhauling you couldn't have been keelhauling he couldn't have been keelhauling we couldn't have been keelhauling you couldn't have been keelhauling they couldn't have been keelhauling

Interrogative form

Simple form	V-ing form
could I keelhaul? could you keelhaul? could he keelhaul? could we keelhaul? could you keelhaul? could they keelhaul?	could I be keelhauling? could you be keelhauling? could he be keelhauling? could we be keelhauling? could you be keelhauling? could they be keelhauling?
Perfect	V-ing perfect
could I have keelhauled? could you have keelhauled? could he have keelhauled? could we have keelhauled? could you have keelhauled? could they have keelhauled?	could I have been keelhauling? could you have been keelhauling? could he have been keelhauling? could we have been keelhauling? could you have been keelhauling? could they have been keelhauling?

Interro-negative form

Simple form	V-ing form
couldn't I keelhaul? couldn't you keelhaul? couldn't he keelhaul? couldn't we keelhaul? couldn't you keelhaul? couldn't they keelhaul?	couldn't I be keelhauling? couldn't you be keelhauling? couldn't he be keelhauling? couldn't we be keelhauling? couldn't you be keelhauling? couldn't they be keelhauling?
Perfect	V-ing perfect
couldn't I have keelhauled? couldn't you have keelhauled? couldn't he have keelhauled? couldn't we have keelhauled? couldn't you have keelhauled? couldn't they have keelhauled?	couldn't I have been keelhauling? couldn't you have been keelhauling? couldn't he have been keelhauling? couldn't we have been keelhauling? couldn't you have been keelhauling? couldn't they have been keelhauling?