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 can't sparkle you can't sparkle he can't sparkle we can't sparkle you can't sparkle they can't sparkle
V-ing form
I can't be sparkling you can't be sparkling he can't be sparkling we can't be sparkling you can't be sparkling they can't be sparkling
Perfect
I can't have sparkled you can't have sparkled he can't have sparkled we can't have sparkled you can't have sparkled they can't have sparkled
V-ing perfect
I can't have been sparkling you can't have been sparkling he can't have been sparkling we can't have been sparkling you can't have been sparkling they can't 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't I sparkle? can't you sparkle? can't he sparkle? can't we sparkle? can't you sparkle? can't they sparkle?
V-ing form
can't I be sparkling? can't you be sparkling? can't he be sparkling? can't we be sparkling? can't you be sparkling? can't they be sparkling?
Perfect
can't I have sparkled? can't you have sparkled? can't he have sparkled? can't we have sparkled? can't you have sparkled? can't they have sparkled?
V-ing perfect
can't I have been sparkling? can't you have been sparkling? can't he have been sparkling? can't we have been sparkling? can't you have been sparkling? can't they have been sparkling?