English verb conjugation
CAN MACHINE

Regular verb: machine - machined - machined

Affirmation

Simple form	V-ing form
I can machine you can machine she can machine we can machine you can machine they can machine	I can be machining you can be machining she can be machining we can be machining you can be machining they can be machining
Perfect	V-ing perfect
I can have machined you can have machined she can have machined we can have machined you can have machined they can have machined	I can have been machining you can have been machining she can have been machining we can have been machining you can have been machining they can have been machining

Negation

Simple form	V-ing form
I cannot machine you cannot machine she cannot machine we cannot machine you cannot machine they cannot machine	I cannot be machining you cannot be machining she cannot be machining we cannot be machining you cannot be machining they cannot be machining
Perfect	V-ing perfect
I cannot have machined you cannot have machined she cannot have machined we cannot have machined you cannot have machined they cannot have machined	I cannot have been machining you cannot have been machining she cannot have been machining we cannot have been machining you cannot have been machining they cannot have been machining

Interrogative form

Simple form	V-ing form
can I machine? can you machine? can she machine? can we machine? can you machine? can they machine?	can I be machining? can you be machining? can she be machining? can we be machining? can you be machining? can they be machining?
Perfect	V-ing perfect
can I have machined? can you have machined? can she have machined? can we have machined? can you have machined? can they have machined?	can I have been machining? can you have been machining? can she have been machining? can we have been machining? can you have been machining? can they have been machining?

Interro-negative form

Simple form	V-ing form
can I not machine? can you not machine? can she not machine? can we not machine? can you not machine? can they not machine?	can I not be machining? can you not be machining? can she not be machining? can we not be machining? can you not be machining? can they not be machining?
Perfect	V-ing perfect
can I not have machined? can you not have machined? can she not have machined? can we not have machined? can you not have machined? can they not have machined?	can I not have been machining? can you not have been machining? can she not have been machining? can we not have been machining? can you not have been machining? can they not have been machining?