can twiddle
Regular verb: twiddle - twiddled- twiddled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can twiddle
you can twiddle
he can twiddle
we can twiddle
you can twiddle
they can twiddle 	I can be twiddling
you can be twiddling
he can be twiddling
we can be twiddling
you can be twiddling
they can be twiddling	I can have twiddled
you can have twiddled
he can have twiddled
we can have twiddled
you can have twiddled
they can have twiddled	I can have been twiddling
you can have been twiddling
he can have been twiddling
we can have been twiddling
you can have been twiddling
they can have been twiddling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot twiddle
you cannot twiddle
he cannot twiddle
we cannot twiddle
you cannot twiddle
they cannot twiddle 	I cannot be twiddling
you cannot be twiddling
he cannot be twiddling
we cannot be twiddling
you cannot be twiddling
they cannot be twiddling	I cannot have twiddled
you cannot have twiddled
he cannot have twiddled
we cannot have twiddled
you cannot have twiddled
they cannot have twiddled	I cannot have been twiddling
you cannot have been twiddling
he cannot have been twiddling
we cannot have been twiddling
you cannot have been twiddling
they cannot have been twiddling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I twiddle?
can you twiddle?
can he twiddle?
can we twiddle?
can you twiddle?
can they twiddle? 	can I be twiddling?
can you be twiddling?
can he be twiddling?
can we be twiddling?
can you be twiddling?
can they be twiddling? 	can I have twiddled?
can you have twiddled?
can he have twiddled?
can we have twiddled?
can you have twiddled?
can they have twiddled? 	can I have been twiddling?
can you have been twiddling?
can he have been twiddling?
can we have been twiddling?
can you have been twiddling?
can they have been twiddling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not twiddle?
can you not twiddle?
can he not twiddle?
can we not twiddle?
can you not twiddle?
can they not twiddle? 	can I not be twiddling?
can you not be twiddling?
can he not be twiddling?
can we not be twiddling?
can you not be twiddling?
can they not be twiddling? 	can I not have twiddled?
can you not have twiddled?
can he not have twiddled?
can we not have twiddled?
can you not have twiddled?
can they not have twiddled? 	can I not have been twiddling?
can you not have been twiddling?
can he not have been twiddling?
can we not have been twiddling?
can you not have been twiddling?
can they not have been twiddling?