can trip
Regular verb: trip - tripped- tripped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can trip
you can trip
she can trip
we can trip
you can trip
they can trip 	I can be tripping
you can be tripping
she can be tripping
we can be tripping
you can be tripping
they can be tripping	I can have tripped
you can have tripped
she can have tripped
we can have tripped
you can have tripped
they can have tripped	I can have been tripping
you can have been tripping
she can have been tripping
we can have been tripping
you can have been tripping
they can have been tripping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't trip
you can't trip
she can't trip
we can't trip
you can't trip
they can't trip 	I can't be tripping
you can't be tripping
she can't be tripping
we can't be tripping
you can't be tripping
they can't be tripping	I can't have tripped
you can't have tripped
she can't have tripped
we can't have tripped
you can't have tripped
they can't have tripped	I can't have been tripping
you can't have been tripping
she can't have been tripping
we can't have been tripping
you can't have been tripping
they can't have been tripping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I trip?
can you trip?
can she trip?
can we trip?
can you trip?
can they trip? 	can I be tripping?
can you be tripping?
can she be tripping?
can we be tripping?
can you be tripping?
can they be tripping? 	can I have tripped?
can you have tripped?
can she have tripped?
can we have tripped?
can you have tripped?
can they have tripped? 	can I have been tripping?
can you have been tripping?
can she have been tripping?
can we have been tripping?
can you have been tripping?
can they have been tripping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I trip?
can't you trip?
can't she trip?
can't we trip?
can't you trip?
can't they trip? 	can't I be tripping?
can't you be tripping?
can't she be tripping?
can't we be tripping?
can't you be tripping?
can't they be tripping? 	can't I have tripped?
can't you have tripped?
can't she have tripped?
can't we have tripped?
can't you have tripped?
can't they have tripped? 	can't I have been tripping?
can't you have been tripping?
can't she have been tripping?
can't we have been tripping?
can't you have been tripping?
can't they have been tripping?