English verb conjugation
CAN SELECT

Regular verb: select - selected - selected

Affirmation

Simple form	V-ing form
I can select you can select he can select we can select you can select they can select	I can be selecting you can be selecting he can be selecting we can be selecting you can be selecting they can be selecting
Perfect	V-ing perfect
I can have selected you can have selected he can have selected we can have selected you can have selected they can have selected	I can have been selecting you can have been selecting he can have been selecting we can have been selecting you can have been selecting they can have been selecting

Negation

Simple form	V-ing form
I cannot select you cannot select he cannot select we cannot select you cannot select they cannot select	I cannot be selecting you cannot be selecting he cannot be selecting we cannot be selecting you cannot be selecting they cannot be selecting
Perfect	V-ing perfect
I cannot have selected you cannot have selected he cannot have selected we cannot have selected you cannot have selected they cannot have selected	I cannot have been selecting you cannot have been selecting he cannot have been selecting we cannot have been selecting you cannot have been selecting they cannot have been selecting

Interrogative form

Simple form	V-ing form
can I select? can you select? can he select? can we select? can you select? can they select?	can I be selecting? can you be selecting? can he be selecting? can we be selecting? can you be selecting? can they be selecting?
Perfect	V-ing perfect
can I have selected? can you have selected? can he have selected? can we have selected? can you have selected? can they have selected?	can I have been selecting? can you have been selecting? can he have been selecting? can we have been selecting? can you have been selecting? can they have been selecting?

Interro-negative form

Simple form	V-ing form
can I not select? can you not select? can he not select? can we not select? can you not select? can they not select?	can I not be selecting? can you not be selecting? can he not be selecting? can we not be selecting? can you not be selecting? can they not be selecting?
Perfect	V-ing perfect
can I not have selected? can you not have selected? can he not have selected? can we not have selected? can you not have selected? can they not have selected?	can I not have been selecting? can you not have been selecting? can he not have been selecting? can we not have been selecting? can you not have been selecting? can they not have been selecting?