could gatecrash
Regular verb: gatecrash - gatecrashed- gatecrashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could gatecrash
you could gatecrash
he could gatecrash
we could gatecrash
you could gatecrash
they could gatecrash 	I could be gatecrashing
you could be gatecrashing
he could be gatecrashing
we could be gatecrashing
you could be gatecrashing
they could be gatecrashing	I could have gatecrashed
you could have gatecrashed
he could have gatecrashed
we could have gatecrashed
you could have gatecrashed
they could have gatecrashed	I could have been gatecrashing
you could have been gatecrashing
he could have been gatecrashing
we could have been gatecrashing
you could have been gatecrashing
they could have been gatecrashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't gatecrash
you couldn't gatecrash
he couldn't gatecrash
we couldn't gatecrash
you couldn't gatecrash
they couldn't gatecrash 	I couldn't be gatecrashing
you couldn't be gatecrashing
he couldn't be gatecrashing
we couldn't be gatecrashing
you couldn't be gatecrashing
they couldn't be gatecrashing	I couldn't have gatecrashed
you couldn't have gatecrashed
he couldn't have gatecrashed
we couldn't have gatecrashed
you couldn't have gatecrashed
they couldn't have gatecrashed	I couldn't have been gatecrashing
you couldn't have been gatecrashing
he couldn't have been gatecrashing
we couldn't have been gatecrashing
you couldn't have been gatecrashing
they couldn't have been gatecrashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gatecrash?
could you gatecrash?
could he gatecrash?
could we gatecrash?
could you gatecrash?
could they gatecrash? 	could I be gatecrashing?
could you be gatecrashing?
could he be gatecrashing?
could we be gatecrashing?
could you be gatecrashing?
could they be gatecrashing? 	could I have gatecrashed?
could you have gatecrashed?
could he have gatecrashed?
could we have gatecrashed?
could you have gatecrashed?
could they have gatecrashed? 	could I have been gatecrashing?
could you have been gatecrashing?
could he have been gatecrashing?
could we have been gatecrashing?
could you have been gatecrashing?
could they have been gatecrashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I gatecrash?
couldn't you gatecrash?
couldn't he gatecrash?
couldn't we gatecrash?
couldn't you gatecrash?
couldn't they gatecrash? 	couldn't I be gatecrashing?
couldn't you be gatecrashing?
couldn't he be gatecrashing?
couldn't we be gatecrashing?
couldn't you be gatecrashing?
couldn't they be gatecrashing? 	couldn't I have gatecrashed?
couldn't you have gatecrashed?
couldn't he have gatecrashed?
couldn't we have gatecrashed?
couldn't you have gatecrashed?
couldn't they have gatecrashed? 	couldn't I have been gatecrashing?
couldn't you have been gatecrashing?
couldn't he have been gatecrashing?
couldn't we have been gatecrashing?
couldn't you have been gatecrashing?
couldn't they have been gatecrashing?