I can strike you can strike he can strike we can strike you can strike they can strike
V-ing form
I can be striking you can be striking he can be striking we can be striking you can be striking they can be striking
Perfect
I can have struck, stricken you can have struck, stricken he can have struck, stricken we can have struck, stricken you can have struck, stricken they can have struck, stricken
V-ing perfect
I can have been striking you can have been striking he can have been striking we can have been striking you can have been striking they can have been striking
Negation
Simple form
I cannot strike you cannot strike he cannot strike we cannot strike you cannot strike they cannot strike
V-ing form
I cannot be striking you cannot be striking he cannot be striking we cannot be striking you cannot be striking they cannot be striking
Perfect
I cannot have struck, stricken you cannot have struck, stricken he cannot have struck, stricken we cannot have struck, stricken you cannot have struck, stricken they cannot have struck, stricken
V-ing perfect
I cannot have been striking you cannot have been striking he cannot have been striking we cannot have been striking you cannot have been striking they cannot have been striking
Interrogative form
Simple form
can I strike? can you strike? can he strike? can we strike? can you strike? can they strike?
V-ing form
can I be striking? can you be striking? can he be striking? can we be striking? can you be striking? can they be striking?
Perfect
can I have struck, stricken? can you have struck, stricken? can he have struck, stricken? can we have struck, stricken? can you have struck, stricken? can they have struck, stricken?
V-ing perfect
can I have been striking? can you have been striking? can he have been striking? can we have been striking? can you have been striking? can they have been striking?
Interro-negative form
Simple form
can I not strike? can you not strike? can he not strike? can we not strike? can you not strike? can they not strike?
V-ing form
can I not be striking? can you not be striking? can he not be striking? can we not be striking? can you not be striking? can they not be striking?
Perfect
can I not have struck, stricken? can you not have struck, stricken? can he not have struck, stricken? can we not have struck, stricken? can you not have struck, stricken? can they not have struck, stricken?
V-ing perfect
can I not have been striking? can you not have been striking? can he not have been striking? can we not have been striking? can you not have been striking? can they not have been striking?