English verb conjugation
CAN HANDLE

Regular verb: handle - handled - handled

Affirmation

Simple form	V-ing form
I can handle you can handle he can handle we can handle you can handle they can handle	I can be handling you can be handling he can be handling we can be handling you can be handling they can be handling
Perfect	V-ing perfect
I can have handled you can have handled he can have handled we can have handled you can have handled they can have handled	I can have been handling you can have been handling he can have been handling we can have been handling you can have been handling they can have been handling

Negation

Simple form	V-ing form
I cannot handle you cannot handle he cannot handle we cannot handle you cannot handle they cannot handle	I cannot be handling you cannot be handling he cannot be handling we cannot be handling you cannot be handling they cannot be handling
Perfect	V-ing perfect
I cannot have handled you cannot have handled he cannot have handled we cannot have handled you cannot have handled they cannot have handled	I cannot have been handling you cannot have been handling he cannot have been handling we cannot have been handling you cannot have been handling they cannot have been handling

Interrogative form

Simple form	V-ing form
can I handle? can you handle? can he handle? can we handle? can you handle? can they handle?	can I be handling? can you be handling? can he be handling? can we be handling? can you be handling? can they be handling?
Perfect	V-ing perfect
can I have handled? can you have handled? can he have handled? can we have handled? can you have handled? can they have handled?	can I have been handling? can you have been handling? can he have been handling? can we have been handling? can you have been handling? can they have been handling?

Interro-negative form

Simple form	V-ing form
can I not handle? can you not handle? can he not handle? can we not handle? can you not handle? can they not handle?	can I not be handling? can you not be handling? can he not be handling? can we not be handling? can you not be handling? can they not be handling?
Perfect	V-ing perfect
can I not have handled? can you not have handled? can he not have handled? can we not have handled? can you not have handled? can they not have handled?	can I not have been handling? can you not have been handling? can he not have been handling? can we not have been handling? can you not have been handling? can they not have been handling?