English verb conjugation
CAN STIFF-ARM

Regular verb: stiff-arm - stiff-armed - stiff-armed

Affirmation

Simple form	V-ing form
I can stiff-arm you can stiff-arm he can stiff-arm we can stiff-arm you can stiff-arm they can stiff-arm	I can be stiff-arming you can be stiff-arming he can be stiff-arming we can be stiff-arming you can be stiff-arming they can be stiff-arming
Perfect	V-ing perfect
I can have stiff-armed you can have stiff-armed he can have stiff-armed we can have stiff-armed you can have stiff-armed they can have stiff-armed	I can have been stiff-arming you can have been stiff-arming he can have been stiff-arming we can have been stiff-arming you can have been stiff-arming they can have been stiff-arming

Negation

Simple form	V-ing form
I can't stiff-arm you can't stiff-arm he can't stiff-arm we can't stiff-arm you can't stiff-arm they can't stiff-arm	I can't be stiff-arming you can't be stiff-arming he can't be stiff-arming we can't be stiff-arming you can't be stiff-arming they can't be stiff-arming
Perfect	V-ing perfect
I can't have stiff-armed you can't have stiff-armed he can't have stiff-armed we can't have stiff-armed you can't have stiff-armed they can't have stiff-armed	I can't have been stiff-arming you can't have been stiff-arming he can't have been stiff-arming we can't have been stiff-arming you can't have been stiff-arming they can't have been stiff-arming

Interrogative form

Simple form	V-ing form
can I stiff-arm? can you stiff-arm? can he stiff-arm? can we stiff-arm? can you stiff-arm? can they stiff-arm?	can I be stiff-arming? can you be stiff-arming? can he be stiff-arming? can we be stiff-arming? can you be stiff-arming? can they be stiff-arming?
Perfect	V-ing perfect
can I have stiff-armed? can you have stiff-armed? can he have stiff-armed? can we have stiff-armed? can you have stiff-armed? can they have stiff-armed?	can I have been stiff-arming? can you have been stiff-arming? can he have been stiff-arming? can we have been stiff-arming? can you have been stiff-arming? can they have been stiff-arming?

Interro-negative form

Simple form	V-ing form
can't I stiff-arm? can't you stiff-arm? can't he stiff-arm? can't we stiff-arm? can't you stiff-arm? can't they stiff-arm?	can't I be stiff-arming? can't you be stiff-arming? can't he be stiff-arming? can't we be stiff-arming? can't you be stiff-arming? can't they be stiff-arming?
Perfect	V-ing perfect
can't I have stiff-armed? can't you have stiff-armed? can't he have stiff-armed? can't we have stiff-armed? can't you have stiff-armed? can't they have stiff-armed?	can't I have been stiff-arming? can't you have been stiff-arming? can't he have been stiff-arming? can't we have been stiff-arming? can't you have been stiff-arming? can't they have been stiff-arming?