can stall
Regular verb: stall - stalled- stalled

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