can stall
Regular verb: stall - stalled- stalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can stall
you can stall
she can stall
we can stall
you can stall
they can stall 	I can be stalling
you can be stalling
she can be stalling
we can be stalling
you can be stalling
they can be stalling	I can have stalled
you can have stalled
she can have stalled
we can have stalled
you can have stalled
they can have stalled	I can have been stalling
you can have been stalling
she can have been stalling
we can have been stalling
you can have been stalling
they can have been stalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't stall
you can't stall
she can't stall
we can't stall
you can't stall
they can't stall 	I can't be stalling
you can't be stalling
she can't be stalling
we can't be stalling
you can't be stalling
they can't be stalling	I can't have stalled
you can't have stalled
she can't have stalled
we can't have stalled
you can't have stalled
they can't have stalled	I can't have been stalling
you can't have been stalling
she can't have been stalling
we can't have been stalling
you can't have been stalling
they can't have been stalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I stall?
can you stall?
can she stall?
can we stall?
can you stall?
can they stall? 	can I be stalling?
can you be stalling?
can she be stalling?
can we be stalling?
can you be stalling?
can they be stalling? 	can I have stalled?
can you have stalled?
can she have stalled?
can we have stalled?
can you have stalled?
can they have stalled? 	can I have been stalling?
can you have been stalling?
can she have been stalling?
can we have been stalling?
can you have been stalling?
can they have been stalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I stall?
can't you stall?
can't she stall?
can't we stall?
can't you stall?
can't they stall? 	can't I be stalling?
can't you be stalling?
can't she be stalling?
can't we be stalling?
can't you be stalling?
can't they be stalling? 	can't I have stalled?
can't you have stalled?
can't she have stalled?
can't we have stalled?
can't you have stalled?
can't they have stalled? 	can't I have been stalling?
can't you have been stalling?
can't she have been stalling?
can't we have been stalling?
can't you have been stalling?
can't they have been stalling?