English verb conjugation
CAN WHILE

Regular verb: while - whiled - whiled

Affirmation

Simple form	V-ing form
I can while you can while he can while we can while you can while they can while	I can be whiling you can be whiling he can be whiling we can be whiling you can be whiling they can be whiling
Perfect	V-ing perfect
I can have whiled you can have whiled he can have whiled we can have whiled you can have whiled they can have whiled	I can have been whiling you can have been whiling he can have been whiling we can have been whiling you can have been whiling they can have been whiling

Negation

Simple form	V-ing form
I can't while you can't while he can't while we can't while you can't while they can't while	I can't be whiling you can't be whiling he can't be whiling we can't be whiling you can't be whiling they can't be whiling
Perfect	V-ing perfect
I can't have whiled you can't have whiled he can't have whiled we can't have whiled you can't have whiled they can't have whiled	I can't have been whiling you can't have been whiling he can't have been whiling we can't have been whiling you can't have been whiling they can't have been whiling

Interrogative form

Simple form	V-ing form
can I while? can you while? can he while? can we while? can you while? can they while?	can I be whiling? can you be whiling? can he be whiling? can we be whiling? can you be whiling? can they be whiling?
Perfect	V-ing perfect
can I have whiled? can you have whiled? can he have whiled? can we have whiled? can you have whiled? can they have whiled?	can I have been whiling? can you have been whiling? can he have been whiling? can we have been whiling? can you have been whiling? can they have been whiling?

Interro-negative form

Simple form	V-ing form
can't I while? can't you while? can't he while? can't we while? can't you while? can't they while?	can't I be whiling? can't you be whiling? can't he be whiling? can't we be whiling? can't you be whiling? can't they be whiling?
Perfect	V-ing perfect
can't I have whiled? can't you have whiled? can't he have whiled? can't we have whiled? can't you have whiled? can't they have whiled?	can't I have been whiling? can't you have been whiling? can't he have been whiling? can't we have been whiling? can't you have been whiling? can't they have been whiling?