I can recycle you can recycle he can recycle we can recycle you can recycle they can recycle
V-ing form
I can be recycling you can be recycling he can be recycling we can be recycling you can be recycling they can be recycling
Perfect
I can have recycled you can have recycled he can have recycled we can have recycled you can have recycled they can have recycled
V-ing perfect
I can have been recycling you can have been recycling he can have been recycling we can have been recycling you can have been recycling they can have been recycling
Negation
Simple form
I cannot recycle you cannot recycle he cannot recycle we cannot recycle you cannot recycle they cannot recycle
V-ing form
I cannot be recycling you cannot be recycling he cannot be recycling we cannot be recycling you cannot be recycling they cannot be recycling
Perfect
I cannot have recycled you cannot have recycled he cannot have recycled we cannot have recycled you cannot have recycled they cannot have recycled
V-ing perfect
I cannot have been recycling you cannot have been recycling he cannot have been recycling we cannot have been recycling you cannot have been recycling they cannot have been recycling
Interrogative form
Simple form
can I recycle? can you recycle? can he recycle? can we recycle? can you recycle? can they recycle?
V-ing form
can I be recycling? can you be recycling? can he be recycling? can we be recycling? can you be recycling? can they be recycling?
Perfect
can I have recycled? can you have recycled? can he have recycled? can we have recycled? can you have recycled? can they have recycled?
V-ing perfect
can I have been recycling? can you have been recycling? can he have been recycling? can we have been recycling? can you have been recycling? can they have been recycling?
Interro-negative form
Simple form
can I not recycle? can you not recycle? can he not recycle? can we not recycle? can you not recycle? can they not recycle?
V-ing form
can I not be recycling? can you not be recycling? can he not be recycling? can we not be recycling? can you not be recycling? can they not be recycling?
Perfect
can I not have recycled? can you not have recycled? can he not have recycled? can we not have recycled? can you not have recycled? can they not have recycled?
V-ing perfect
can I not have been recycling? can you not have been recycling? can he not have been recycling? can we not have been recycling? can you not have been recycling? can they not have been recycling?