I can drip you can drip she can drip we can drip you can drip they can drip
V-ing form
I can be dripping you can be dripping she can be dripping we can be dripping you can be dripping they can be dripping
Perfect
I can have dripped you can have dripped she can have dripped we can have dripped you can have dripped they can have dripped
V-ing perfect
I can have been dripping you can have been dripping she can have been dripping we can have been dripping you can have been dripping they can have been dripping
Negation
Simple form
I can't drip you can't drip she can't drip we can't drip you can't drip they can't drip
V-ing form
I can't be dripping you can't be dripping she can't be dripping we can't be dripping you can't be dripping they can't be dripping
Perfect
I can't have dripped you can't have dripped she can't have dripped we can't have dripped you can't have dripped they can't have dripped
V-ing perfect
I can't have been dripping you can't have been dripping she can't have been dripping we can't have been dripping you can't have been dripping they can't have been dripping
Interrogative form
Simple form
can I drip? can you drip? can she drip? can we drip? can you drip? can they drip?
V-ing form
can I be dripping? can you be dripping? can she be dripping? can we be dripping? can you be dripping? can they be dripping?
Perfect
can I have dripped? can you have dripped? can she have dripped? can we have dripped? can you have dripped? can they have dripped?
V-ing perfect
can I have been dripping? can you have been dripping? can she have been dripping? can we have been dripping? can you have been dripping? can they have been dripping?
Interro-negative form
Simple form
can't I drip? can't you drip? can't she drip? can't we drip? can't you drip? can't they drip?
V-ing form
can't I be dripping? can't you be dripping? can't she be dripping? can't we be dripping? can't you be dripping? can't they be dripping?
Perfect
can't I have dripped? can't you have dripped? can't she have dripped? can't we have dripped? can't you have dripped? can't they have dripped?
V-ing perfect
can't I have been dripping? can't you have been dripping? can't she have been dripping? can't we have been dripping? can't you have been dripping? can't they have been dripping?