English verb conjugation CAN STEM

Regular verb: stem - stemmed - stemmed

Affirmation

Simple form

I can stem
you can stem
he can stem
we can stem
you can stem
they can stem

V-ing form

I can be stemming
you can be stemming
he can be stemming
we can be stemming
you can be stemming
they can be stemming

Perfect

I can have stemmed
you can have stemmed
he can have stemmed
we can have stemmed
you can have stemmed
they can have stemmed

V-ing perfect

I can have been stemming
you can have been stemming
he can have been stemming
we can have been stemming
you can have been stemming
they can have been stemming

Negation

Simple form

I can't stem
you can't stem
he can't stem
we can't stem
you can't stem
they can't stem

V-ing form

I can't be stemming
you can't be stemming
he can't be stemming
we can't be stemming
you can't be stemming
they can't be stemming

Perfect

I can't have stemmed
you can't have stemmed
he can't have stemmed
we can't have stemmed
you can't have stemmed
they can't have stemmed

V-ing perfect

I can't have been stemming
you can't have been stemming
he can't have been stemming
we can't have been stemming
you can't have been stemming
they can't have been stemming

Interrogative form

Simple form

can I stem?
can you stem?
can he stem?
can we stem?
can you stem?
can they stem?

V-ing form

can I be stemming?
can you be stemming?
can he be stemming?
can we be stemming?
can you be stemming?
can they be stemming?

Perfect

can I have stemmed?
can you have stemmed?
can he have stemmed?
can we have stemmed?
can you have stemmed?
can they have stemmed?

V-ing perfect

can I have been stemming?
can you have been stemming?
can he have been stemming?
can we have been stemming?
can you have been stemming?
can they have been stemming?

Interro-negative form

Simple form

can't I stem?
can't you stem?
can't he stem?
can't we stem?
can't you stem?
can't they stem?

V-ing form

can't I be stemming?
can't you be stemming?
can't he be stemming?
can't we be stemming?
can't you be stemming?
can't they be stemming?

Perfect

can't I have stemmed?
can't you have stemmed?
can't he have stemmed?
can't we have stemmed?
can't you have stemmed?
can't they have stemmed?

V-ing perfect

can't I have been stemming?
can't you have been stemming?
can't he have been stemming?
can't we have been stemming?
can't you have been stemming?
can't they have been stemming?

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