I can sting you can sting she can sting we can sting you can sting they can sting
V-ing form
I can be stinging you can be stinging she can be stinging we can be stinging you can be stinging they can be stinging
Perfect
I can have stung you can have stung she can have stung we can have stung you can have stung they can have stung
V-ing perfect
I can have been stinging you can have been stinging she can have been stinging we can have been stinging you can have been stinging they can have been stinging
Negation
Simple form
I can't sting you can't sting she can't sting we can't sting you can't sting they can't sting
V-ing form
I can't be stinging you can't be stinging she can't be stinging we can't be stinging you can't be stinging they can't be stinging
Perfect
I can't have stung you can't have stung she can't have stung we can't have stung you can't have stung they can't have stung
V-ing perfect
I can't have been stinging you can't have been stinging she can't have been stinging we can't have been stinging you can't have been stinging they can't have been stinging
Interrogative form
Simple form
can I sting? can you sting? can she sting? can we sting? can you sting? can they sting?
V-ing form
can I be stinging? can you be stinging? can she be stinging? can we be stinging? can you be stinging? can they be stinging?
Perfect
can I have stung? can you have stung? can she have stung? can we have stung? can you have stung? can they have stung?
V-ing perfect
can I have been stinging? can you have been stinging? can she have been stinging? can we have been stinging? can you have been stinging? can they have been stinging?
Interro-negative form
Simple form
can't I sting? can't you sting? can't she sting? can't we sting? can't you sting? can't they sting?
V-ing form
can't I be stinging? can't you be stinging? can't she be stinging? can't we be stinging? can't you be stinging? can't they be stinging?
Perfect
can't I have stung? can't you have stung? can't she have stung? can't we have stung? can't you have stung? can't they have stung?
V-ing perfect
can't I have been stinging? can't you have been stinging? can't she have been stinging? can't we have been stinging? can't you have been stinging? can't they have been stinging?