I can sparkle you can sparkle he can sparkle we can sparkle you can sparkle they can sparkle
V-ing form
I can be sparkling you can be sparkling he can be sparkling we can be sparkling you can be sparkling they can be sparkling
Perfect
I can have sparkled you can have sparkled he can have sparkled we can have sparkled you can have sparkled they can have sparkled
V-ing perfect
I can have been sparkling you can have been sparkling he can have been sparkling we can have been sparkling you can have been sparkling they can have been sparkling
Negation
Simple form
I cannot sparkle you cannot sparkle he cannot sparkle we cannot sparkle you cannot sparkle they cannot sparkle
V-ing form
I cannot be sparkling you cannot be sparkling he cannot be sparkling we cannot be sparkling you cannot be sparkling they cannot be sparkling
Perfect
I cannot have sparkled you cannot have sparkled he cannot have sparkled we cannot have sparkled you cannot have sparkled they cannot have sparkled
V-ing perfect
I cannot have been sparkling you cannot have been sparkling he cannot have been sparkling we cannot have been sparkling you cannot have been sparkling they cannot have been sparkling
Interrogative form
Simple form
can I sparkle? can you sparkle? can he sparkle? can we sparkle? can you sparkle? can they sparkle?
V-ing form
can I be sparkling? can you be sparkling? can he be sparkling? can we be sparkling? can you be sparkling? can they be sparkling?
Perfect
can I have sparkled? can you have sparkled? can he have sparkled? can we have sparkled? can you have sparkled? can they have sparkled?
V-ing perfect
can I have been sparkling? can you have been sparkling? can he have been sparkling? can we have been sparkling? can you have been sparkling? can they have been sparkling?
Interro-negative form
Simple form
can I not sparkle? can you not sparkle? can he not sparkle? can we not sparkle? can you not sparkle? can they not sparkle?
V-ing form
can I not be sparkling? can you not be sparkling? can he not be sparkling? can we not be sparkling? can you not be sparkling? can they not be sparkling?
Perfect
can I not have sparkled? can you not have sparkled? can he not have sparkled? can we not have sparkled? can you not have sparkled? can they not have sparkled?
V-ing perfect
can I not have been sparkling? can you not have been sparkling? can he not have been sparkling? can we not have been sparkling? can you not have been sparkling? can they not have been sparkling?