can instrument
Regular verb: instrument - instrumented- instrumented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can instrument
you can instrument
she can instrument
we can instrument
you can instrument
they can instrument 	I can be instrumenting
you can be instrumenting
she can be instrumenting
we can be instrumenting
you can be instrumenting
they can be instrumenting	I can have instrumented
you can have instrumented
she can have instrumented
we can have instrumented
you can have instrumented
they can have instrumented	I can have been instrumenting
you can have been instrumenting
she can have been instrumenting
we can have been instrumenting
you can have been instrumenting
they can have been instrumenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't instrument
you can't instrument
she can't instrument
we can't instrument
you can't instrument
they can't instrument 	I can't be instrumenting
you can't be instrumenting
she can't be instrumenting
we can't be instrumenting
you can't be instrumenting
they can't be instrumenting	I can't have instrumented
you can't have instrumented
she can't have instrumented
we can't have instrumented
you can't have instrumented
they can't have instrumented	I can't have been instrumenting
you can't have been instrumenting
she can't have been instrumenting
we can't have been instrumenting
you can't have been instrumenting
they can't have been instrumenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I instrument?
can you instrument?
can she instrument?
can we instrument?
can you instrument?
can they instrument? 	can I be instrumenting?
can you be instrumenting?
can she be instrumenting?
can we be instrumenting?
can you be instrumenting?
can they be instrumenting? 	can I have instrumented?
can you have instrumented?
can she have instrumented?
can we have instrumented?
can you have instrumented?
can they have instrumented? 	can I have been instrumenting?
can you have been instrumenting?
can she have been instrumenting?
can we have been instrumenting?
can you have been instrumenting?
can they have been instrumenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I instrument?
can't you instrument?
can't she instrument?
can't we instrument?
can't you instrument?
can't they instrument? 	can't I be instrumenting?
can't you be instrumenting?
can't she be instrumenting?
can't we be instrumenting?
can't you be instrumenting?
can't they be instrumenting? 	can't I have instrumented?
can't you have instrumented?
can't she have instrumented?
can't we have instrumented?
can't you have instrumented?
can't they have instrumented? 	can't I have been instrumenting?
can't you have been instrumenting?
can't she have been instrumenting?
can't we have been instrumenting?
can't you have been instrumenting?
can't they have been instrumenting?