can single
Regular verb: single - singled- singled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can single
you can single
he can single
we can single
you can single
they can single 	I can be singling
you can be singling
he can be singling
we can be singling
you can be singling
they can be singling	I can have singled
you can have singled
he can have singled
we can have singled
you can have singled
they can have singled	I can have been singling
you can have been singling
he can have been singling
we can have been singling
you can have been singling
they can have been singling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot single
you cannot single
he cannot single
we cannot single
you cannot single
they cannot single 	I cannot be singling
you cannot be singling
he cannot be singling
we cannot be singling
you cannot be singling
they cannot be singling	I cannot have singled
you cannot have singled
he cannot have singled
we cannot have singled
you cannot have singled
they cannot have singled	I cannot have been singling
you cannot have been singling
he cannot have been singling
we cannot have been singling
you cannot have been singling
they cannot have been singling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I single?
can you single?
can he single?
can we single?
can you single?
can they single? 	can I be singling?
can you be singling?
can he be singling?
can we be singling?
can you be singling?
can they be singling? 	can I have singled?
can you have singled?
can he have singled?
can we have singled?
can you have singled?
can they have singled? 	can I have been singling?
can you have been singling?
can he have been singling?
can we have been singling?
can you have been singling?
can they have been singling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not single?
can you not single?
can he not single?
can we not single?
can you not single?
can they not single? 	can I not be singling?
can you not be singling?
can he not be singling?
can we not be singling?
can you not be singling?
can they not be singling? 	can I not have singled?
can you not have singled?
can he not have singled?
can we not have singled?
can you not have singled?
can they not have singled? 	can I not have been singling?
can you not have been singling?
can he not have been singling?
can we not have been singling?
can you not have been singling?
can they not have been singling?